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DTSTART;TZID=America/Los_Angeles:20240207T161500
DTEND;TZID=America/Los_Angeles:20240207T173000
DTSTAMP:20260417T214839
CREATED:20240201T010113Z
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SUMMARY:Shrinkage Estimation for Causal Inference and Experimental Design (Evan T. R. Rosenman)
DESCRIPTION:Title: Shrinkage Estimation for Causal Inference and Experimental Design \nSpeaker: Evan T. R. Rosenman\, Assistant Professor of Statistics\, Claremont McKenna College \nAbstract: Passive collection of observational data — in settings such as medicine\, insurance\, and e-commerce — is a ubiquitous feature of modern life. For statisticians\, these ever-proliferating datasets are both promising and perilous. Observational data often contain rich information about the causal effects of novel treatments\, such as a new vaccine or drug regimen. Yet\, because assignment to treatment is not randomized within these data\, one can never guarantee that treated and untreated units are comparable. Consequently\, causal effects derived from observational studies often suffer from bias. The applied literature contains myriad examples of treatments that seemed promising in observational data\, only to be overturned by later\, higher-quality studies. \nHow might we make headway\, given these challenges? One approach is to couple observational data with randomized trials. In this talk\, I will consider how to develop estimators to merge causal effect estimates obtained from observational and experimental datasets\, when the two data sources measure the same treatment. I will primarily operate in the Empirical Bayes (EB) framework. EB procedures\, rooted in the work of Charles Stein and the renowned James-Stein estimator\, offer principled\, data-driven methods for reconciling competing estimates of the same quantity. I will discuss two techniques for deriving EB estimators that effectively merge observational and experimental causal estimates. Additionally\, I will explore the potential contribution of these concepts to improving the efficiency of prospective randomized trials. Simple algorithms\, leveraging numerical integrals\, will be highlighted for making more informed recruitment and treatment assignment decisions within the experimental setup.\n\n\n\n\n\nEvan Rosenman is an Assistant Professor of Statistics in the Claremont McKenna Department of Mathematical Sciences. His research focuses primarily on problems in data science and causal inference\, with applications to political science and public health. He is particularly intrigued by problems involving hybridizing observational and experimental data to better estimate causal effects\, and by applications in modern electioneering\, such as ecological inference and prediction calibration. He earned his PhD in Statistics from Stanford University and completed a postdoctoral fellowship at the Harvard Data Science Initiative.
URL:https://colleges.claremont.edu/ccms/event/shrinkage-estimation-for-causal-inference-and-experimental-design-evan-t-r-rosenman/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240131T161500
DTEND;TZID=America/Los_Angeles:20240131T173000
DTSTAMP:20260417T214839
CREATED:20240120T030122Z
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SUMMARY:Math as Art and Recreation (Peter Kagey\, HMC)
DESCRIPTION:Title: Math as Art and Recreation \nSpeaker: Peter Kagey\, HMC \nAbstract: Recreational Mathematics is an area of math which is rooted in exploration and playfulness\, and includes puzzles\, games\, art\, and more. This talk takes a closer look at these ideas\, emphasizing how a foundation of curiosity and play can lead to insightful connections with various branches of mathematics\, fostering a deeper appreciation for both the beauty and the enjoyment inherent in mathematics. Illustrating this\, I will describe how a question from Martin Gardner ultimately led to theorems in group theory and combinatorics\, demonstrating the unexpected bridges that can be built between recreational puzzles and deeper mathematical concepts. \n\n\n\n\n\nPeter Kagey is a Visiting Assistant Professor from Harvey Mudd College. He received his Ph.D. from the University of Southern California in 2022. Since 2019\, he has been an Associate Editor with the On-Line Encyclopedia of Integer Sequences. His research interests include combinatorics and algebra\, along with discrete\, experimental\, and recreational mathematics. He is passionate about cultivating a culture of joy\, curiosity\, and care in the mathematics community.
URL:https://colleges.claremont.edu/ccms/event/math-as-art-and-recreation-peter-kagey-hmc/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240124T161500
DTEND;TZID=America/Los_Angeles:20240124T173000
DTSTAMP:20260417T214839
CREATED:20240118T192512Z
LAST-MODIFIED:20240118T192512Z
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SUMMARY:Graph Complexes and Moduli Spaces of Curves (Siddarth Kannan\, UCLA)
DESCRIPTION:Title: Graph Complexes and Moduli Spaces of Curves \nSpeaker: Siddarth Kannan\, UCLA \nAbstract: I will begin by defining a certain combinatorial object called a graph complex. Then I will give a brief introduction to the moduli space of curves. The study of the geometry of this moduli space has occupied several generations of mathematicians\, across fields such as algebraic and differential geometry\, mathematical physics\,  geometric group theory\, and more. Finally\, I will describe the beautiful connection between the graph complex and the topology of the moduli space. \n\n\n\n\n\nI am currently a postdoc at UCLA. I obtained my PhD from Brown University in 2023\, after graduating from Pomona College in 2018. I first became interested in the combinatorial aspects of algebraic geometry while working with Prof. Dagan Karp as an undergraduate.
URL:https://colleges.claremont.edu/ccms/event/graph-complexes-and-moduli-spaces-of-curves-siddarth-kannan-ucla/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231129T161500
DTEND;TZID=America/Los_Angeles:20231129T173000
DTSTAMP:20260417T214839
CREATED:20231107T015413Z
LAST-MODIFIED:20231107T015413Z
UID:3318-1701274500-1701279000@colleges.claremont.edu
SUMMARY:“The science of Mathematics is not crystallized into text-books” : The Bryn Mawr Mathematical Journal Club (1896 — 1924)\, (Jemma Lorenat\, Pitzer College)
DESCRIPTION:Title: “The science of Mathematics is not crystallized into text-books” : The Bryn Mawr Mathematical Journal Club (1896 — 1924) \nSpeaker: Jemma Lorenat\, Pitzer College \nAbstract: As mathematics departments in the United States began to shift toward standards of original research at the end of the nineteenth century\, many adopted journal clubs as forums for students to synthesize and share new research. The Bryn Mawr Mathematical Journal Club\, maintained episodically between 1896 and 1924\, began as a supplement to the graduate course offerings. Each semester student and professor participants focused on a single disciplinary area or surveyed what had been published lately. The Notebooks containing these reports were stored on the open shelves of the college library. These collectively composed documents record ways in which graduate students transcribed and interpreted contemporary mathematics. This talk focuses on the entries of Virginia Ragsdale\, in which she formulated research questions\, tested potential strategies\, and pursued novel results in topology. \n\n\n\n\n\nJemma Lorenat is a historian of mathematics at Pitzer College. She enjoys learning about the long nineteenth century\, visualization\, quantification\, ordinary people becoming mathematicians\, food\, and many other things. Her forthcoming book is about how the local environment of Bryn Mawr College shaped mathematical practices there.
URL:https://colleges.claremont.edu/ccms/event/the-science-of-mathematics-is-not-crystallized-into-text-books-the-bryn-mawr-mathematical-journal-club-1896-1924-jemma-lorenat-pitzer-college/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231115T161500
DTEND;TZID=America/Los_Angeles:20231115T173000
DTSTAMP:20260417T214839
CREATED:20231106T190605Z
LAST-MODIFIED:20231106T190605Z
UID:3313-1700064900-1700069400@colleges.claremont.edu
SUMMARY:Adinkra Heights and Color-Splitting Rainbows (Ursula Whitcher\, American Mathematical Society)
DESCRIPTION:Title: Adinkra Heights and Color-Splitting Rainbows \nSpeaker: Ursula Whitcher\, American Mathematical Society \nAbstract: Adinkras are decorated graphs that encapsulate information about conjectural relationships between fundamental particles in physics. If we color the edges of an Adinkra with a rainbow of shades in a specific order\, we obtain a special curve that we can study usingalgebraic and geometric techniques. We use this structure to characterize height functions on Adinkras\, then show how to compute the same information using data from our rainbow. This talk describes joint work with Amanda Francis. \n\n\n\n\n\nDr. Ursula Whitcher is an associate editor at Math Reviews (MathSciNet)\, a project of the American Mathematical Society\, covering a range of areas from algebraic geometry to history of mathematics. Before joining the AMS\, Dr. Whitcher earned a PhD from the University of Washington\, was a Teaching and Research Postdoctoral Fellow at Harvey Mudd\, and became an associate professor at the University of Wisconsin-Eau Claire. Find Dr. Whitcher’s mathematically inspired poetry and fiction in Asimov’s Science Fiction Magazine\, Analog\, or the Journal of Humanistic Mathematics.
URL:https://colleges.claremont.edu/ccms/event/adinkra-heights-and-color-splitting-rainbows-ursula-whitcher-american-mathematical-society/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231108T161500
DTEND;TZID=America/Los_Angeles:20231108T173000
DTSTAMP:20260417T214839
CREATED:20231020T213110Z
LAST-MODIFIED:20231020T213157Z
UID:3297-1699460100-1699464600@colleges.claremont.edu
SUMMARY:Lonely Runners and My Favorite Polyhedron (Matthias Beck\, San Francisco State University)
DESCRIPTION:Title: Lonely Runners and My Favorite Polyhedron \nSpeaker: Matthias Beck\, Department of Mathematics\, San Francisco State University \nAbstract: We study the Lonely Runner Conjecture\, conceived by Wills in the 1960’s\, and originally phrased in terms of Diophantine approximation: Given positive integers n_1\, n_2\, …\, n_k\, there exists a positive real number t such that for all 1 ≤ j ≤ k the distance of t n_j to the nearest integer is at least 1/(k+1). This conjecture can be recast in lay terms: if k runners with different (constant) speeds move around a circular track of length 1\, then for each runner there will be a time when they have distance at least 1/k to the others. This (in)famous conjecture in combinatorial number theory is open for k ≥ 7.We will give a brief history of the Lonely Runner Conjecture and some of its variants\, emphasizing a view-obstruction approach by Cusick and recent work by Henze and Malikiosis; our goal is to promote a polyhedral ansatz to the Lonely Runner Conjecture. Our results include affirmative instances that become (quite literally) visible through polyhedral geometry. \nBased on joint work with Serkan Hosten (SF State) and Matthias Schymura (Rostock). \n\n\n\n\n\nMatthias Beck is a professor of mathematics at San Francisco State University and has had visiting positions at SUNY Binghamton\, the Mathematical Sciences Research Institute in Berkeley\, the Max-Planck-Institute in Bonn\, Cornell University\, Vassar College\, and the Freie Universität in Berlin. Matt’s research is in combinatorics and number theory\, in particular\, counting integer points in polyhedra and the application of these enumeration functions to various mathematical topics and problems. He (co-)authored four books and numerous research papers\, many of which feature student coauthors. Matt was honored with the Mathematical Association of America’s Haimo Award for Distinguished College or University Teaching of Mathematics in 2013.x`
URL:https://colleges.claremont.edu/ccms/event/lonely-runners-and-my-favorite-polyhedron-matthias-beck-san-francisco-state-university/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231101T161500
DTEND;TZID=America/Los_Angeles:20231101T173000
DTSTAMP:20260417T214839
CREATED:20231030T223857Z
LAST-MODIFIED:20231030T223857Z
UID:3307-1698855300-1698859800@colleges.claremont.edu
SUMMARY:Slope Gap Distributions of Translation Surfaces (Taylor McAdam\, Pomona College)
DESCRIPTION:Title: Slope gap distributions of translation surfaces \nSpeaker: Taylor McAdam\, Department of Mathematics\, Pomona College \nAbstract: How “random” are the rational numbers? To make sense of this question\, let us consider the set of Farey fractions of level n—that is\, the rational numbers between 0 and 1 with denominator at most n. It turns out that these distribute uniformly in the unit interval as n goes to infinity\, which would suggest they appear to be quite random. However\, we may consider a finer test of randomness by considering the distribution of gaps between consecutive Farey fractions as n tends to infinity. To investigate this\, we will first realize the Farey fractions as the slopes of geodesic paths on the (square) flat torus—a geometric object obtained by gluing the opposite edges of a square together. We will then define the horocycle flow on the space of all flat tori\, which will allow us to study our question about gaps between Farey fractions via a dynamical system. Finally\, we will see how this method can be generalized to study the slope gap distributions for paths on a larger class of geometric objects called translation surfaces and discuss results on the collection of surfaces obtained by gluing together opposite edges of the regular 2n-gon.\n\n\n\n\n\n\nTaylor McAdam graduated with a Bachelor’s degree in mathematics from Harvey Mudd College in 2013 before starting a doctoral program at University of Texas at Austin. In 2017\, she transferred to the University of California San Diego\, where she received her PhD in mathematics in 2019 under the supervision of Amir Mohammadi. She was an NSF Postdoctoral Fellow at Yale University from 2019 to 2023\, before joining the faculty at Pomona College in 2023 as a Visiting Assistant Professor. Her research interests lie at the intersection of dynamical systems\, geometry\, and number theory\, and she is passionate about undergraduate math education and building inclusive mathematical communities.
URL:https://colleges.claremont.edu/ccms/event/slope-gap-distributions-of-translation-surfaces-taylor-mcadam-pomona-college/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231025T161500
DTEND;TZID=America/Los_Angeles:20231025T173000
DTSTAMP:20260417T214839
CREATED:20231020T212712Z
LAST-MODIFIED:20231020T212712Z
UID:3296-1698250500-1698255000@colleges.claremont.edu
SUMMARY:What is a moduli space? (Javier Gonzalez Anaya\, HMC)
DESCRIPTION:Title: What is a moduli space? \nSpeaker: Javier Gonzalez Anaya\, Department of Mathematics\, Harvey Mudd College \nAbstract: A natural endeavour in mathematics is to classify objects according to their properties. For example\, we can readily identify straight lines in the plane\, or recognize different kinds of triangles depending on their symmetries. Less intuitive\, however\, is that given a class of mathematical objects\, it is often possible to construct a geometric space parametrizing those objects. Known as “moduli spaces”\, the study of these spaces has been a major driving force of modern geometry. In this talk we will explore some of the main ideas behind moduli theory through examples\, ranging from the moduli space of lines in the plane to the one of points on the sphere. We will finish by discussing our ongoing research on the moduli space of points in d-dimensional space. \n\n\n\n\n\nJavier González Anaya\, PhD\, is an algebraic geometer specializing in the study of combinatorial structures and finite generation problems within the field of birational geometry. His research extends to areas such as the theory of polytopes and machine learning. Currently\, he holds a position as a visiting assistant professor at Harvey Mudd College\, having previously served in a similar role at UC Riverside. Beyond his research\, Javier is a committed educator and mentor\, having overseen student research projects and taught an extensive range of courses.
URL:https://colleges.claremont.edu/ccms/event/what-is-a-moduli-space-javier-gonzalez-anaya-hmc/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231018T161500
DTEND;TZID=America/Los_Angeles:20231018T173000
DTSTAMP:20260417T214839
CREATED:20231008T000502Z
LAST-MODIFIED:20231012T045933Z
UID:3278-1697645700-1697650200@colleges.claremont.edu
SUMMARY:"Paths in Mathematics After Undergrad" Panel
DESCRIPTION:Stay tuned for more details about this special event!
URL:https://colleges.claremont.edu/ccms/event/social-panel/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231011T161500
DTEND;TZID=America/Los_Angeles:20231011T173000
DTSTAMP:20260417T214839
CREATED:20231003T221601Z
LAST-MODIFIED:20231003T221601Z
UID:3273-1697040900-1697045400@colleges.claremont.edu
SUMMARY:Equality Cases of Geometric Inequalities (Igor Pak\, UCLA)
DESCRIPTION:Title: Equality Cases of Geometric Inequalities \nSpeaker: Igor Pak\, Department of Mathematics\, University of California\, Los Angeles \nAbstract: Geometric inequalities go back to antiquity\, and so do their equality cases.  As everyone knows\, the circle is the only case when the isoperimetric inequality is sharp.  But what happens to other geometric inequalities?  Apparently\, as the inequalities become more general\, their equality cases become more cumbersome to state and even harder to prove.  I will give a broad survey of various natural examples\, with an emphasis on discrete inequalities.  I will then explain why the celebrated Alexandrov–Fenchel inequality has intractable equality cases\, what does that mean\, and how this can be established.  The talk is aimed at a general audience.
URL:https://colleges.claremont.edu/ccms/event/equality-cases-of-geometric-inequalities-igor-pak-ucla/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231004T161500
DTEND;TZID=America/Los_Angeles:20231004T173000
DTSTAMP:20260417T214839
CREATED:20230927T012451Z
LAST-MODIFIED:20231003T221119Z
UID:3265-1696436100-1696440600@colleges.claremont.edu
SUMMARY:Thinking Inside the Box: A combinatorial approach to Schubert Calculus (Sami H. Assaf\, USC)
DESCRIPTION:Title: Thinking Inside the Box: A combinatorial approach to Schubert Calculus \nSpeaker: Sami H. Assaf\, Department of Mathematics\, University of Southern California \nAbstract: Given 2 lines in the plane\, how many points lie on both? If we rule out the case where the two lines are the same\, and we work in projective space so that parallel lines share the point at infinity\, then the answer is always the same: 1 point of intersection. Suppose instead we’re given 4 lines in space. How many other lines meet all four of those? Schubert asked\, and in some cases answered\, such problems in enumerative geometry in his celebrated treatise in 1879. He argued that when the answer is finite\, it does not depend on the choice of the linear spaces. Attempts to formalize Schubert’s “Principle of Conversation of Number” have led us to modern Schubert calculus and intersection theory\, which has ramifications in geometry\, topology\, combinatorics\, and even string theory. I will survey the history of this field from Schubert to now\, highlighting a partial solution that involves enumerating ways of putting numbers in boxes. \n\n\n\n\n\nSami Assaf is a Professor of Mathematics and a Gabilan Distinguished Professor of Science and Engineering at the University of Southern California. Her fundamental research in combinatorics\, geometry and probability is supported by grants from the National Science Foundation and the Simons Foundation. She has delivered plenary addresses for AMS meetings as well as for the annual Formal Power Series and Algebraic Combinatorics conference. Professor Assaf is recipient of a USC Mentoring Award for Faculty Mentoring Undergraduates\, directs a local Math Circle for elementary school students\, and currently serves as Director of Graduate Studies for the Department of Mathematics where she works to foster a culture of inclusivity\, diversity\, and excellence for all students.
URL:https://colleges.claremont.edu/ccms/event/thinking-inside-the-box-a-combinatorial-approach-to-schubert-calculus-sami-h-assaf-usc/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230927T161500
DTEND;TZID=America/Los_Angeles:20230927T173000
DTSTAMP:20260417T214839
CREATED:20230912T031043Z
LAST-MODIFIED:20230927T011953Z
UID:3193-1695831300-1695835800@colleges.claremont.edu
SUMMARY:Building the Fan of a Toric Variety (Professor Reginald Anderson\, Claremont McKenna College)
DESCRIPTION:Title: Building the Fan of a Toric Variety \nSpeaker: Reginald Anderson\, Department of Mathematical Sciences\, Claremont McKenna College \nAbstract: Roughly speaking\, algebraic geometry studies the zero sets of polynomials\, which lead to objects called varieties. Since the zero sets of polynomials do not always pass the vertical line test\, we enlist other methods to study them besides considering the graph of a function. This is analogous to the use of implicit differentiation in calculus. One such method uses line bundles to understand a variety in terms of its algebraic subspaces. Since the zero sets of polynomials can become complicated in multiple variables over the complex numbers\, one simplifying assumption we can impose is that the variety contain a dense\, open algebraic torus. This leads to the notion of a toric variety. I will describe the fan of a toric variety for the complex projective line\, and mention some recent results concerning toric varieties. \n\n\n\n\n\nReginald Anderson received his PhD in mathematics from Kansas State University in May and studies derived categories of toric DM stacks. His research areas include algebraic geometry\, homological algebra\, and category theory.
URL:https://colleges.claremont.edu/ccms/event/fourier-mukai-transforms-and-resolutions-of-the-diagonal-professor-reginald-anderson-claremont-mckenna-college/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230920T161500
DTEND;TZID=America/Los_Angeles:20230920T173000
DTSTAMP:20260417T214839
CREATED:20230911T162639Z
LAST-MODIFIED:20230913T074440Z
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SUMMARY:p-Norm Approval Voting (Professor Michael Orrison\, Harvey Mudd College)
DESCRIPTION:Title: p-Norm Approval Voting \nSpeaker: Michael Orrison\, Professor of Mathematics\, Harvey Mudd College \nAbstract: Approval voting is a relatively simple voting procedure: Given a set of candidates\, each voter chooses a subset of the candidates\, and the candidate chosen the most is then declared the winner. Interestingly\, approval voting can be viewed as an extreme end of a one-parameter family of voting procedures we are calling p-norm approval voting. In this talk\, I’ll explain how we were led to start studying p-norm approval voting\, and I’ll share some of the many properties we’ve discovered about it so far. This is joint work with Hari Nathan\, Katharine Shultis\, and Jessica Sorrells. \n\n\n\n\n\nMichael Orrison is a Professor of Mathematics at Harvey Mudd College. He received his A.B. from Wabash College in 1995\, and his Ph.D. from Dartmouth College in 2001. His teaching interests include linear algebra\, abstract algebra\, discrete mathematics\, and representation theory. His research interests include voting theory and harmonic analysis on finite groups. He particularly enjoys finding\, exploring\, and describing novel applications of the representation theory of finite groups with the help of his talented and energetic research students.
URL:https://colleges.claremont.edu/ccms/event/p-norm-approval-voting-professor-michael-orrison-harvey-mudd-college/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230913T161500
DTEND;TZID=America/Los_Angeles:20230913T173000
DTSTAMP:20260417T214839
CREATED:20230829T200424Z
LAST-MODIFIED:20230829T200724Z
UID:3160-1694621700-1694626200@colleges.claremont.edu
SUMMARY:Diving into Math with Emmy Noether
DESCRIPTION:Title: Diving into Math with Emmy Noether \nStarring: Anita Zieher; Director: Sandra Schueddekopf \nAbstract: A theatre performance by Portraittheater Vienna in co-operation with Freie Universität Berlin about the life of one of history’s most influential mathematicians. Based on historical documents and events\, the script was written by Sandra Schüddekopf and Anita Zieher in cooperation with the historians Mechthild Koreuber and David E. Rowe. Please join us on the Pitzer campus for this very special event with a reception to follow. \n(see link to poster) \n\n\n\n\n 
URL:https://colleges.claremont.edu/ccms/event/diving-into-math-with-emmy-noether/
LOCATION:Benson Auditorium\, 1050 N Mills Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium,Special Event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230906T161500
DTEND;TZID=America/Los_Angeles:20230906T173000
DTSTAMP:20260417T214839
CREATED:20230828T164137Z
LAST-MODIFIED:20230913T074549Z
UID:3151-1694016900-1694021400@colleges.claremont.edu
SUMMARY:CCMS Student Research Poster Session Fall 2023
DESCRIPTION:The Claremont Center for the Mathematical Sciences (CCMS) Math Colloquium series begins with a student research poster session\, showcasing the mathematical work of all students at the Claremont Colleges. Please join us on Wednesday\, September 6th\, in the Estella Courtyard at Pomona College to see the wealth of research projects that Claremont math students have been involved in. \nTitles & Speakers: \nDegenerate PDE model of epidemic spread dynamicsBelgacem Al-AzemContractivity of Quantum Channels with respect to Quantum State Induced NormsEsteban Ayala\, Evelyne Knight\, and Chloe MarpleOn the t-elasticity of numerical semigroupsKarina BeheraRandom Sampling from Defect-d Preference ListsJasper BownElliptic Curves: Minimal Discriminants and Additive ReductionLouis BurnsApplications of Math Modeling in Microscale BiologyWilliam CeelyThe Chromatic Number of the PlaneJonathan Cervantes\, Timothy Harris\, Enayat Khoueinia\, Michael Krebs\, Katherine Ortiz\, Luis Ruiz\, and Claudia Maria SchmidtAnalyzing Data Science Ethics Pedagogies and CurriculaSara ColandoHarnessing Uncertainty through FDA in Breakthrough DataLuisa Gianuca and Tianmin KongCandy Crush Combinatorics in 2xn and 3xn gridsNitipon MoonwichitMachine Learning Hyperparameter Optimization with Genetic AlgorithmsRylie Weaver
URL:https://colleges.claremont.edu/ccms/event/ccms-student-research-poster-session-fall-2023/
LOCATION:Estella Courtyard\, 610 N College Ave\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium,Special Event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230426T161500
DTEND;TZID=America/Los_Angeles:20230426T173000
DTSTAMP:20260417T214839
CREATED:20230122T184652Z
LAST-MODIFIED:20230426T221436Z
UID:3048-1682525700-1682530200@colleges.claremont.edu
SUMMARY:Career Pathways in the Mathematical Sciences (ONLINE)
DESCRIPTION:In this panel we will have people from diverse backgrounds talking about their career pathways. \nThe event will be fully online in the following link: \nhttps://cgu.zoom.us/j/89142368885?pwd=YkhkV24zbUZRV0p2d2xEelZtUmFmdz09Meeting ID: 891 4236 8885Passcode: 314159 \nWe will have panelist’s introductions at the beginning\, and then the remaining time in breakout rooms so that our students and faculty can ask more informal questions. The breakout rooms will be divided in the following sessions: (1) those who completed a bachelor’s degree then went into industry\, (2) those who completed a master’s degree then went into industry\, (3) those who completed a PhD then went into industry\, and (4) those who completed a PhD then went into academia. \nThis event welcomes undergraduate and graduate students. \n  \nPanelists: \nSession 1 \n\nAfter graduating from Pomone College\, Yu Xuan started her career at Goldman Sachs\, where she worked as a quantitative strategist for electronic trading. She then joined Gro Intelligence\, Inc.\, a startup that builds predictive models using climate and agricultural data\, where she was a data scientist. She is now an engineer at Uber\, working on developing machine learning models to optimize Uber’s incentive budget allocation. She also has experience as a technical interviewer\, having conducted over 300 coding interviews for software engineer candidates.\n\nSession 2 \n\nDonald “DJ” Berry graduated from Claremont Graduate University in 2022 with an M.S. in Mathematics and an M.S. in Information Systems and Technology – Data Science and Analytics. He is currently a Research Engineer with the USC affiliated Information Sciences Institute where he works in the AI Division. While his main research interest is in the use of AI to improve how we diagnose and treat disease\, his work lately has focused on using AI to study the flow of information in online social networks. He is also currently collaborating with researchers at CGU and Los Alamos National Laboratory on multi-fidelity machine learning techniques. Prior to graduate school\, DJ worked as a Product Engineer at Esri where he helped build data analysis and visualization tools.\nMadeline Brown: I am working as a data scientist and software engineer in ocean conservation. I enjoy my work because I can apply mathematical research to humanitarian problems.I actively became involved in research during my time in college. I graduated from Claremont Graduate University with a Master of Science in Mathematics in May 2022. In May 2021\, I graduated from Scripps College with a Bachelor of Arts in Mathematics and a Minor in Chinese. As an undergraduate\, I presented mathematical research at nine conferences\, including the Joint Mathematics Meetings (JMM). I participated in Research Experience for Undergraduates (REU) for two summers and was a student researcher at Oak Ridge National Laboratory through the Science Undergraduate Laboratory Internship (SULI).\n\nSession 3 \n\nAn Do Dela‘s research focuses on developing pediatrics sub-models at DILIsym. She is also involved in various proprietary projects to develop and apply quantitative systems pharmacology (QSP) models within Simulations Plus. Prior to DILIsym services\, Dr. Dela received her bachelor’s degree in Pure mathematics at California State Polytechnic\, Pomona\, CA. She later earned a Ph.D. in Mathematics from Claremont Graduate University\, CA under the supervision of Dr. Shtylla and Dr. De Pillis. Her graduate work focuses on applying mathematical models using ordinary differential equations and partial differential equations. She is also particularly interested in utilizing the usage of various parameter sensitivity techniques\, nonlinear mixed-effects modeling\, and parametrization techniques to leverage the modeling process to effectively solve important problems within the pharmaceutical industry.\n\nSession 4 \n\n\nDwight Anderson Williams II is a son of Saint Paul\, Minnesota\, who has moved between the shining seas. He studied mathematics at Florida A&M University (BS)\, The Florida State University (MS)\, and The University of Texas at Arlington (PhD). After holding a postdoc position at Iowa State University\, he is now a visiting assistant professor at Pomona College. The Williams Family is\nsoon on its way to Baltimore\, Maryland\, where Dwight will start as an incoming (Fall 2023) tenure-track assistant professor of mathematics at Morgan State University\, a PhD-granting HBCU.\n\nMy name is Casey Johnson. I graduated from Claremont Graduate University (CGU) in Fall 2020. Currently I am a Visiting Adjunct Professor (postdoc) at UCLA studying Opinion Dynamics and Particle Laden Flow and teaching upper division courses. While a student at CGU\, I held part time positions teaching at East Los Angeles College\, Citrus College\, Chaffey College\, and Whittier College. Before completing my PhD\, I was hired by Whittier College for a full-time teaching position from 2018-2022.\nChristina Durón (she/her) is an Assistant Professor of Mathematics in the Natural Science Division of Seaver College at Pepperdine University. Prior to joining Pepperdine\, she was a postdoctoral research associate in the Department of Mathematics at the University of Arizona for three years. She received her PhD in Mathematics at Claremont Graduate University in May 2019 under the supervision of Professor Ami Radunskaya and Professor Jo Hardin from Pomona College. Her research is in network analysis and network theory. With an application-driven perspective\, she develops computational techniques to model\, analyze\, and explore relational data from a variety of fields (e.g.\, biological\, social\, transportation).\n\n 
URL:https://colleges.claremont.edu/ccms/event/career-planning/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230419T161500
DTEND;TZID=America/Los_Angeles:20230419T173000
DTSTAMP:20260417T214839
CREATED:20230122T184542Z
LAST-MODIFIED:20230414T152218Z
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SUMMARY:A Brief History of Calculating Machines (Prof. Yousef Daneshbod\, University of La Verne)
DESCRIPTION:Title: A Brief History of Calculating Machines \nSpeaker: Yousef Daneshbod\, Department of Mathematics\, University of La Verne \nAbstract: Calculating machines are digital or analog devices designed to perform mathematical calculations. These machines have a long history\, with the earliest known examples dating back to ancient times\, when people used sticks and stones for counting. However\, the first mechanical calculators were invented in early modern period thanks to the theoretical development of mathematics and the growing need for more sophisticated computations. Today\, calculating machines are all around us; changing the way we live our lives. In this talk\, I will explain the evolution of early calculating machines and the key people involved with its development. \n\n\n\n\n\nDr. Yousef Daneshbod\, Associate Professor of Mathematics has been teaching at the University of La Verne since 2007. Prior to joining La Verne\, he was a Lecturer in Mathematics at Calpoly Pomona and an Adjunct Professor at Citrus College. Dr. Daneshbod received his B.S. and M.S both in mechanical engineering from Shiraz University in Iran. In the year 2001 he abandoned his studies for a PhD in mechanical engineering just one year before completion and along with his wife immigrated to the U.S. His love for mathematics motivated him to pursue a PhD degree in applied mathematics from the Claremont Graduate University\, eventually graduating in the summer of 2006. Dr. Daneshbod believes that the combination of clear classroom notes along with symbolic computer software can serve as an excellent pedagogical tool for making mathematics much more fun and intuitive for the students. His primary fields of interest include mathematical modeling in microfluidics\, theoretical and computational mechanics and wave propagation in anisotropic media. He is also interested in mathematics education in a liberal arts setting where he tries to inspire his students by exposing them to historical sketches of famous scientists and mathematicians.
URL:https://colleges.claremont.edu/ccms/event/prof-yousef-daneshbod/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230412T161500
DTEND;TZID=America/Los_Angeles:20230412T173000
DTSTAMP:20260417T214839
CREATED:20230122T184442Z
LAST-MODIFIED:20230407T160958Z
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SUMMARY:Sequential: A Meditation on Recurrence (Prof. Ghassan Sarkis\, Pomona College)
DESCRIPTION:Title: Sequential: A Meditation on Recurrence \nSpeaker: Ghassan Sarkis\, Department of Mathematics\, Pomona College \nAbstract: Though I will share some adventures in sequence-generating neural networks just for fun\, the majority of this talk will be concerned with Fibonacci sequences modulo $p$ and $p^2$ from data-inflected and number-theoretic perspectives\, including questions about periods of the modular sequence (how long before it repeats itself?) and associated frequencies (how many of each residue is there?) also just for fun. Most of the presentation should be understandable to math students with exposure to linear algebra and modular arithmetic\, and will include some suggested paths they may want to pursue in their own research as well. \n\n\n\n\n\nGhassan Sarkis is an Associate Professor of Mathematics & Statistics at Pomona College to his great surprise. His training is in number theory\, though he enjoys dabbling in combinatorics\, data science\, and some other puzzles that cross his path. He is very excited to discover what happens next.
URL:https://colleges.claremont.edu/ccms/event/prof-ghassan-sarkis/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230405T161500
DTEND;TZID=America/Los_Angeles:20230405T173000
DTSTAMP:20260417T214839
CREATED:20230122T184214Z
LAST-MODIFIED:20230403T235658Z
UID:3045-1680711300-1680715800@colleges.claremont.edu
SUMMARY:Wallis and Landen: A Tale of two integrals (Prof. Victor Moll\, Tulane University)
DESCRIPTION:Title: Wallis and Landen: A Tale of two integrals \nSpeaker: Victor Moll\, Department of Mathematics\, Tulane University \nAbstract: Victor Moll Abstract \n  \n\n\n\n\n\nI was born in Santiago\, Chile during the last millenium\, on October 31st. My father was a doctor in a small town. I must have been bothering my family\, so they put me to school at an early age. My first mathematical mentor was Maria Pardo\, who recognized that I had some talent for Mathematics. Since this came easy\, I spent most of my middle and high school years trying to learn some more. The other subjects suffered.\nAfter high-school\, liking Mathematics\, I enrolled in an Engineering School. Not a good idea. But since one could transfer to study Mathematics\, everything worked out fine. After graduation\, since PhD’s in Math were rare in Chile\, I was hired as a faculty member of Universidad Santa Maria (not a catholic school\, this is the last name of some rich chilean person). In 1980 I left for New York City\, to begin my graduate education at the Courant Institute of NYU. I was interested in Number Theory and this is one of the best places for Applied Mathematics. Talk about being clueless. There I met my wife\, Lisa Fauci\, then also a student. (She is the former president of SIAM and has a large collections of well-deserved awards). We both got positions at Tulane University in 1986. We figure we will try New Orleans for a year or two. Never left.\nMy PhD thesis was in the stability of waves for a model for nerve conduction. Did that until I got tenure. After tenure I spent a sabbatical to finish writing a book on Elliptic Curves (jointly with my advisor\, Henry McKean). Then a piece of luck: a first year graduate student (George Boros) told me that he could compute an integral. Not impressed\, I tried Mathematica and it was unable to find the answer. This changed my research area. I have been computing integrals since then. Have written a variety of papers on this and three books (at diverse levels). I am currently the scientific editor of the table by Gradshteyn and Ryzhik\, one of the most used tables in the world.\nI enjoy working with undergraduate and graduate students\, professional colleagues and amateurs. I have been part of REU programs such as SIMU (in Puerto Rico)\, MSRI-UP (at Berkeley) and a variety of summer programs at Tulane. Lately I have been participating in programs aimed at faculty coming from institutions with high teaching load (Park City\, Utah and ICERM\, at Brown). My latest projects involves a new method called ”The method of brackets”\, invented by my collaborator Ivan Gonzalez\, a professor of Physics in Valparaiso\, Chile. Our works deals with the evaluation of Feynman diagrams\, coming in the description of elementary particles. To me\, this is the last leg of a cycle. As a high school student\, I wanted to study Particle Physics. It is never too late to go back to the beginning.
URL:https://colleges.claremont.edu/ccms/event/prof-victor-moll/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230329T161500
DTEND;TZID=America/Los_Angeles:20230329T173000
DTSTAMP:20260417T214839
CREATED:20230122T184003Z
LAST-MODIFIED:20230328T003844Z
UID:3044-1680106500-1680111000@colleges.claremont.edu
SUMMARY:Reading Topology from Open Books (Prof. Bahar Acu\, Pitzer College)
DESCRIPTION:Title: Reading Topology from Open Books \nSpeaker: Bahar Acu\, Department of Mathematics\, Pitzer College \nAbstract: How can we study topological shapes that are outside the realm of our imagination? In this talk\, we will explore potential answers to that question by diving deep into dimensionality and topology via open books.  Topology is the study of properties of shapes that do not fundamentally change when they are bent and/or stretched without poking holes or ripping apart. At this point\, you must have heard that to a topologist\, a donut and a coffee cup (with a handle) are the same thing since one can be deformed into the other continuously\, i.e. only via bending and/or stretching. A very useful strategy in studying topological objects (in our case\, manifolds) is to factor them into smaller pieces. An open book decomposition of an n-dimensional manifold (the open book) is a special function that helps us study our object in terms of its (n-1)-dimensional fibers (the pages) and (n-2)-dimensional boundary of these fibers (the binding). This topological tool provides a natural framework for studying topological properties of certain geometric structures on smooth manifolds such as contact structures. For example\, every (contact) 3-dimensional manifold can be presented as an open book whose pages are surfaces and binding is a knot/link. In this talk\, we will talk about these objects in greater detail with examples. \n\n\n\n\n\nDr. Bahar Acu is an Assistant Professor of Mathematics at Pitzer College. Prior to joining Claremont Colleges\, Dr. Acu held positions at UCLA\, Northwestern\, ETH Zürich\, and IAS Princeton following a Ph.D. degree from the University of Southern California. Dr. Acu’s primary research interests are in the field of geometric topology\, more precisely contact and symplectic topology in high dimensions and their relations with low-dimensional topology. Dr. Acu is the co-founder and lead-organizer of the inaugural international research collaboration conference for women and nonbinary mathematicians in the field of symplectic and contact geometry and topology. The peer-reviewed volume of this conference Research Directions in Symplectic and Contact Geometry and Topology\, lead-edited by Dr. Acu\, was recently published as a part of Springer’s Association for Women in Mathematics Series.
URL:https://colleges.claremont.edu/ccms/event/prof-bahar-acu/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230322T161500
DTEND;TZID=America/Los_Angeles:20230322T173000
DTSTAMP:20260417T214839
CREATED:20230122T183858Z
LAST-MODIFIED:20230306T164339Z
UID:3043-1679501700-1679506200@colleges.claremont.edu
SUMMARY:How Many Cards Can Avoid a SET? (Prof. Mohamed Omar\, Harvey Mudd College)
DESCRIPTION:Title: How Many Cards Can Avoid a SET? \nSpeaker: Mohamed Omar\, Department of Mathematics\, Harvey Mudd College \nAbstract: SET is a popular real-time card game where players search for special triples of cards among a table of cards that are face-up. A common issue when playing the game is not having a SET among theface-up cards. What is the maximum number of cards that can be face-up while avoiding a SET? Surprisingly\, this question is at the heart of a decades old central problem in extremal combinatorics and additive number theory that had a major breakthrough in 2017. In this talk\, we describe the breakthrough\, and how the presenter used ideas in its development to make headway on a range of disparate problems in combinatorics. \n\n\n\n\n\nDr. Mohamed Omar is an Associate Professor of Mathematics\, Associate Chair of Mathematics and the Joseph B. Platt Chair in Effective Teaching at Harvey Mudd College. He has received national awards for his research\, including being the inaugural recipient of the American Mathematical Society’s Claytor-Gilmer Fellowship and an inaugural recipient of the Karen EDGE Fellowship\, both celebrating mid-career research. He has also earned the Henry L. Alder Award\, the preeminent junior faculty national prize given by the Mathematical Association of America. He is the author of over 30 peer-reviewed articles in internationally recognized journals\, studying the interaction between algebra and combinatorics.
URL:https://colleges.claremont.edu/ccms/event/prof-mohamed-omar/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230308T161500
DTEND;TZID=America/Los_Angeles:20230308T173000
DTSTAMP:20260417T214839
CREATED:20230122T181942Z
LAST-MODIFIED:20230306T183227Z
UID:3042-1678292100-1678296600@colleges.claremont.edu
SUMMARY:Sometimes Pi Equals 4 (Prof. Cornelia van Cott\, University of San Francisco)
DESCRIPTION:Title: Sometimes Pi Equals 4 \nSpeaker: Cornelia van Cott\, Department of Mathematics\, University of San Francisco \nAbstract: Most of your mathematical life\, you’ve known that pi is a number somewhere between 3.1 and 3.2. But if we exchange the usual notion of distance in two-dimensional space for others\, pi can be any of an infinite number of different values. What are these values? You’ll be surprised at the twists and turns we encounter when we head into these uncharted territories. \n\n\n\n\n\nCornelia Van Cott is a mathematics professor at the University of San Francisco. She earned her PhD from Indiana University in the area of geometric topology. Her undergraduate degree is from Wheaton College. Her current favorite work activity outside of teaching and research is doing something that combines these two things – student research projects.
URL:https://colleges.claremont.edu/ccms/event/prof-cornelia-van-cott/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230301T161500
DTEND;TZID=America/Los_Angeles:20230301T173000
DTSTAMP:20260417T214839
CREATED:20230122T181703Z
LAST-MODIFIED:20230220T192135Z
UID:3041-1677687300-1677691800@colleges.claremont.edu
SUMMARY:Watch your step: Modeling on Time Scales (Prof. Raegan Higgins\, Texas Tech University)
DESCRIPTION:Title: Watch your step: Modeling on Time Scales \nSpeaker: Raegan Higgins\, Department of Mathematics & Statistics\, Texas Tech University \nAbstract: Generally\, differential and difference equations are used in the mathematical modeling of physical systems. Our modeling approach uses dynamic equations on time scales. A time scale T is an arbitrary\, nonempty\, closed subset of the real numbers. While introducing the calculus on time scales\, we will give an application of time scales to oncology. We will discuss developing specific models and the related preliminary results and analysis. \n\n\n\n\n\nRaegan Higgins didn’t always love math. In her eyes\, it was a class that everyone had to take. It wasn’t\nchallenging\, nor was it easy; it just was. Upon placing out of Pre-Algebra in middle school\, Raegan entered Algebra which quickly became her adversary. With little Pre-Algebra background\, she struggled in the course she called “The Land of Unknowns.” But\, with a very encouraging no-nonsense teacher and parents who only asked for their daughter’s best\, Raegan excelled in Algebra and became an aspiring\nmathematician. \nIn 2008\, Raegan was one of the first two African Americans to earn a doctoral degree in Mathematics from the University of Nebraska- Lincoln. She had officially become a mathematician. In that same year\, she joined the faculty at Texas Tech University. Her primary research focuses on determining conditions in which solutions to differential-like equations eventually stay positive or negative. While also interested in applications of time scales (nonempty subsets of the real numbers)\, Dr. Higgins has a keen interest in increasing the number of women\, especially those underrepresented\, in STEM and improving the undergraduate preparation of mathematics majors. Her service mission is to support communities historically excluded from STEM by creating and supporting programs that increase visibility\, amplify the voices of women and people of color\, and foster community and share resources. Raegan serves as\ncodirector of the EDGE (Enhancing Diversity in Graduate Education) Summer Program and cofounder and cocreator of the website Mathematically Gifted and Black.
URL:https://colleges.claremont.edu/ccms/event/prof-raegan-higgins/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230222T161500
DTEND;TZID=America/Los_Angeles:20230222T173000
DTSTAMP:20260417T214839
CREATED:20230122T180801Z
LAST-MODIFIED:20230213T202959Z
UID:3040-1677082500-1677087000@colleges.claremont.edu
SUMMARY:Mathematical model for HIV-1 infection with stem cell and immune-therapy (Prof. Noufe Aljahdaly\, King Abdulaziz University / CGU)
DESCRIPTION:Title: Mathematical model for HIV-1 infection with stem cell and immune-therapy \nSpeaker: Noufe Aljahdaly\, Department of Mathematics\, King Abdulaziz University / CGU \nAbstract: The AIDS is a chronic disease. Its most common treatment is the antiretroviral therapy (cART) and the virus can be more effected if the patients stop using cART. The other problem is that the CD8+ T cells might be exhausted by persistent immune activation by cART. The researchers still exert their high efforts to reach the cure of HIV infection. Actually\, there are two cases that have achieved a cure of HIV-1 by stem cell (SC) transplantation who are known as London patient and Berlin patient. In this work\, we introduced the mathematical model of HIV-1 infection with stem cell therapy. The model was studied theoretically and the numerical solution was obtained to understand the effect of SC therapy. Our results realized that the virus of HIV-1 patient remains undetectable in patient blood after SC transplantation for a period of time. Then\, the patient may experience rebound within short period. These results are aligned with two medical cases in the literature. To better understand how London and Berlin patient got a cure by SC therapy while other patients did not achieve the same result\, we improved the mathematical model by taking in account the immune system response. We found that the cure of HIV-1 can be achieved by increasing the immune system response during receiving the SC therapy. \n\n\n\n\n\nNoufe is an associate professor of mathematics in the Department of Mathematics at King Abdulaziz University\, Saudi Arabia. She received her master degree in Mathematics from Oregon state University in 2012 and received her Ph.D. in Mathematics from the University of Alabama in 2017. She is a visiting researcher in CGU since Aug. 2022. Her research in applied mathematics\, mathematical modeling\, fluid dynamic and mathematical computation.
URL:https://colleges.claremont.edu/ccms/event/prof-noufe-aljahdaly/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230215T161500
DTEND;TZID=America/Los_Angeles:20230215T173000
DTSTAMP:20260417T214839
CREATED:20230122T180444Z
LAST-MODIFIED:20230209T173448Z
UID:3039-1676477700-1676482200@colleges.claremont.edu
SUMMARY:Quantum chromatic numbers of products of quantum graphs (Prof. Rolando De Santiago\, Purdue University)
DESCRIPTION:Title: Quantum chromatic numbers of products of quantum graphs \nSpeaker: Rolando De Santiago\, Department of Mathematics\, Purdue University \nAbstract: Quantum graphs are an operator space generalization of classical graphs that have emerged in different branches of mathematics including operator theory\, non-commutative topology and quantum information theory. We provide a brief introduction to quantum graphs and the quantum chromatic number of graphs. We define the lexicographic product of quantum graphs and investigate the quantum chromatic number of the resulting graph products. Additionally\, we discuss our work on developing the b-fold chromatic number for quantum graphs analogous to the classical case. \nThis is joint work with Meenakshi McNamara \n\n\n\n\n\nRolando is an assistant professor of mathematics in the Department of Mathematics at Purdue University. He considers himself a proud product of the LAUSD\, the community college\, and the Cal State systems which set him up to receive his Ph.D. in Mathematics from the University of Iowa in 2017. Afterward\, he went on to do a postdoc at UCLA where he was awarded the UC Presidential Postdoctoral Fellowship in 2018. His research in the structural aspects of group von Neumann algebras sits at the intersection of analysis\, geometric group theory\, representation theory\, and\, on very rare occasions\, quantum information theory.
URL:https://colleges.claremont.edu/ccms/event/prof-rolando-de-santiago/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230208T161500
DTEND;TZID=America/Los_Angeles:20230208T173000
DTSTAMP:20260417T214839
CREATED:20230122T180304Z
LAST-MODIFIED:20230206T231015Z
UID:3038-1675872900-1675877400@colleges.claremont.edu
SUMMARY:The mathematics of neural networks: recent advances\, thoughts\, and the path forward (Prof. Mikhail Belkin\, UCSD)
DESCRIPTION:Title: The mathematics of neural networks: recent advances\, thoughts\, and the path forward \nSpeaker: Prof. Mikhail Belkin\, Department of Mathematics\, University of California San Diego \nAbstract: The recent remarkable practical achievements of neural networks have far outpaced our theoretical understanding of their properties. Yet\, it is hard to imagine that progress can continue indefinitely\, without deeper understanding of their fundamental principles and limitations. In this talk I will discuss some recent advances in the mathematics of neural networks and outline what\, in my opinion\, are some promising directions for future research. \n\n\n\n\n\nMikhail Belkin received his Ph.D. in 2003 from the Department of Mathematics at the University of Chicago. His research interests are in theory and  applications of machine learning and data analysis. Some of his well-known work includes widely used Laplacian Eigenmaps\, Graph Regularization and Manifold Regularization algorithms\, which brought ideas from classical differential geometry and spectral analysis to data science. His recent work has been concerned with understanding remarkable mathematical and statistical phenomena observed in deep learning. This empirical evidence necessitated revisiting some of the basic concepts in statistics and optimization.  One of his key recent findings is the “double descent” risk curve that extends the textbook U-shaped bias-variance trade-off curve beyond the point of interpolation. Mikhail Belkin has served on the editorial boards of the Journal of Machine Learning Research\, IEEE Pattern Analysis and Machine Intelligence and SIAM Journal on Mathematics of Data Science.
URL:https://colleges.claremont.edu/ccms/event/prof-mikhail-belkin/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230201T161500
DTEND;TZID=America/Los_Angeles:20230201T173000
DTSTAMP:20260417T214839
CREATED:20230122T175931Z
LAST-MODIFIED:20230131T145826Z
UID:3037-1675268100-1675272600@colleges.claremont.edu
SUMMARY:Building trustworthy data-driven epidemiological models: Application to the COVID-19 outbreak in New York City (Prof. Joan Ponce\, Arizona State University)
DESCRIPTION:Title: Building trustworthy data-driven epidemiological models: Application to the COVID-19 outbreak in New York City\n\n\n\nSpeaker: Joan Ponce\, Department of Mathematics\, Arizona State University\n\nAbstract: Epidemiological models can provide the dynamic evolution of a pandemic but they are based on many assumptions and parameters that have to be adjusted over the time the pandemic lasts. However\, often the available data are not sufficient to identify the model parameters and hence infer the unobserved dynamics. We develop a general framework for building a trustworthy data-driven epidemiological model\, consisting of a workflow that integrates data acquisition and event timeline\, model development\, identifiability analysis\, sensitivity analysis\, model calibration\, model robustness analysis\, and projection with uncertainties in different scenarios.  In particular\, we apply this framework to propose a modified susceptible–exposed–infectious–recovered (SEIR) model\, including new compartments and model vaccination in order to project the transmission dynamics of COVID-19 in New York City (NYC). We find that we can uniquely estimate the model parameters and accurately project the daily new infection cases\, hospitalizations\, and deaths\, in agreement with the available data from NYC’s government’s website. In addition\, we employ the calibrated data-driven model to study the effects of vaccination and timing of reopening indoor dining in NYC.
URL:https://colleges.claremont.edu/ccms/event/prof-joan-ponce/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230125T161500
DTEND;TZID=America/Los_Angeles:20230125T173000
DTSTAMP:20260417T214839
CREATED:20230122T175532Z
LAST-MODIFIED:20230123T053430Z
UID:3036-1674663300-1674667800@colleges.claremont.edu
SUMMARY:No-arbitrage Pricing in a Market for Position on a Multilane Freeway (Prof. Henry Schellhorn\, CGU)
DESCRIPTION:Title: No-arbitrage Pricing in a Market for Position on a Multilane Freeway \nSpeaker: Henry Schellhorn\, Department of Mathematics\, Claremont Graduate University \nAbstract:  We introduce a trading mechanism allowing cars to change position in a multilane congested freeway by doing peer-to-peer transactions. For the car initiating the operation\, or incoming car\, the goal can be to increase speed\, to have less speed variability\, to join a platoon\, or to join an exit lane that is slower but full. We focus in this paper on the maneuver where the incoming car changes lanes by asking an adjacent car on a busy target lane (to the left or right) to slow down\, but we also consider the case where the incoming car asks the car in front of it to change lanes\, so that the incoming car takes its position but stays on the same lane. In both cases\, the incoming car pays a transaction fee. We solve the microscopic problem of determining these transaction fees by (i) embedding the problem in a macroscopic model and (ii) calculating fair lane prices by the no arbitrage condition. This no-arbitrage condition states that no future trajectory will always be better than all others in terms of both speed and money exchanged to change lanes. The terms “always better” has to be understood in a probabilistic sense: we analyze a stochastic model\, in order to include uncertainty in both the speed model and the drivers’ decisions. We highlight the advantages of no-arbitrage theory over a traditional expected utility maximization approach. First\, no-arbitrage pricing does not require any individual data\, whether on the driver’s risk-aversion\, preference of speed over money or increased safety\, or final destination. Second\, the macroscopic model that we use considers endogenously the global impact of any individual priced transaction\, as opposed to local models that require extraneous assumptions on the road conditions after the transaction. We implemented a simple case of our priced lane change model. After simulating it extensively\, we implemented it in real-time\, with 2 cars trading position on a freeway using macroscopic speed information to determine the transaction fee. \n\n\n\n\n\nHenry Schellhorn is professor of mathematics at Claremont Graduate University’s Institute of Mathematics Sciences and academic director of the Financial Engineering Program at the Drucker School of Management. His research focuses in the areas of Monte Carlo simulation\, credit risk management\, interest rate models\, queuing theory\, and combinatorial auctions.
URL:https://colleges.claremont.edu/ccms/event/prof-henry-schellhorn-2/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.0999157;-117.7142668
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Argue Auditorium Pomona College 610 N. College Ave. Claremont CA 91711 United States;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142668,34.0999157
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221130T161500
DTEND;TZID=America/Los_Angeles:20221130T173000
DTSTAMP:20260417T214839
CREATED:20220912T190237Z
LAST-MODIFIED:20220912T190237Z
UID:2914-1669824900-1669829400@colleges.claremont.edu
SUMMARY:Prof. Jack Wesley
DESCRIPTION:Speaker: Jack Wesley\, Department of Mathematics\, UC Davis
URL:https://colleges.claremont.edu/ccms/event/prof-jack-wesley/
LOCATION:Humanities Auditorium\, Scripps College\, and Zoom\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.1035221214;-117.709766675
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221116T161500
DTEND;TZID=America/Los_Angeles:20221116T173000
DTSTAMP:20260417T214839
CREATED:20220830T231344Z
LAST-MODIFIED:20221104T225945Z
UID:2808-1668615300-1668619800@colleges.claremont.edu
SUMMARY:Prof. Kate Petersen
DESCRIPTION:Title: Decision Problems in Low-Dimensional Topology \nSpeaker: Kate Petersen\, Department of Mathematics and Statistics\, CSU\, University of Minnesota Duluth \nAbstract: Due to Perelman’s proof of the Geometrization conjecture every closed 3-manifold can be decomposed into geometric pieces. These pieces exhibit one of Thurston’s eight model geometries.  This gives rise to the natural question: Given a 3-manifold how (quickly) can you determine its geometry?  We will discuss this question\, including some recent advances.  This is joint work with Neil Hoffman. \n\n\n\n\n\n\n\n\nMy research interests are in number theory and topology. After completing my undergraduate degree at Oberlin College\, I earned my PhD in 2005 at the University of Texas at Austin under the direction of Alan Reid.  My PhD work was in arithmetic groups\, which bridge number theory and topology.  Following my PhD I had a postdoc at Queen’s University in Kingston Ontario where I worked in number theory with Ram Murty.  I spent a semester visiting the Fields Institute before joining Florida State as a tenure-track Assistant Professor.  I earned tenure there in 2015.  In 2021 I joined the faculty of University of Minnesota Duluth where I am now the head of the Mathematics and Statistics Department.
URL:https://colleges.claremont.edu/ccms/event/kate-petersen/
LOCATION:Humanities Auditorium\, Scripps College\, and Zoom\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.1035221214;-117.709766675
END:VEVENT
END:VCALENDAR