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DTSTART;TZID=America/Los_Angeles:20240302T100000
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DTSTAMP:20260404T215946
CREATED:20240218T044742Z
LAST-MODIFIED:20240218T044742Z
UID:3385-1709373600-1709380800@colleges.claremont.edu
SUMMARY:GEMS March 2nd Session
DESCRIPTION:
URL:https://colleges.claremont.edu/ccms/event/gems-march-2nd-session/
LOCATION:Harvey Mudd College at the Shanahan Teaching and Learning Center\, 301 Platt Blvd.\, Claremont\, CA\, 91711\, United States
CATEGORIES:GEMS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240228T161500
DTEND;TZID=America/Los_Angeles:20240228T173000
DTSTAMP:20260404T215946
CREATED:20240222T005317Z
LAST-MODIFIED:20240222T005317Z
UID:3395-1709136900-1709141400@colleges.claremont.edu
SUMMARY:A Group-Theoretic Ax-Katz Theorem (Pete L. Clark\, University of Georgia)
DESCRIPTION:Title: A Group-Theoretic Ax-Katz Theorem \nSpeaker: Pete L. Clark\, University of Georgia \nAbstract: The Chevalley-Warning Theorem is a result from 1935 asserting that the number of solutions to a low degree polynomial system over a finite field is divisible by the characteristic of the field.  It is an important result — it includes a conjecture of Artin and Dickson from the 1920’s — but it is not difficult to prove: the original proof is about three pages.  In 1964 James Ax gave a completely elementary ten line proof.   In the same paper\, Ax showed that as the number and degrees of the polynomials are held fixed and the number of variables increases\, not only is the size of the solution set divisible by p but by higher and higher powers of p.  The best possible p-adic divisibility here was given in 1971 by Nicholas Katz.  Katz’s proof is at a much higher level: you need specialist knowledge in the right subfields of number theory to understand it.  Simpler proofs were found later\, but none fulfills the fantasy of generalizing Ax’s ten line proof of Chevalley-Warning. \nA 2021 work of Aichinger-Moosbauer develops a fully fledged calculus of finite differences for maps between commutative groups and uses it to give a purely group-theoretic generalization of Chevalley-Warning. Nicholas Triantafillou and I have used and extended this work: up to a few black boxes (where most of the content is indeed hidden) we give a ten line proof of a group-theoretic analogue of Ax-Katz that “qualitatively fulfills my fantasy.”\n\n\n\n\n\nIn (North)west Philadelphia was Pete L. Clark born and raised.  He received undergraduate and masters degrees from the University of Chicago and a PhD from Harvard University.  He has worked in the Mathematics Department at the University of Georgia since 2006\, where he was the Graduate Coordinator from 2016-2019 and where he is now the Principal Honors Advisor.  When time permits he is an avid reader\, and his favorite authors include Ralph Ellison\, Jonathan Franzen\, Kazuo Ishiguro\, Carmen Maria Machado and Lorrie Moore.
URL:https://colleges.claremont.edu/ccms/event/a-group-theoretic-ax-katz-theorem-pete-l-clark-university-of-georgia/
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:20240227T150000
DTEND;TZID=America/Los_Angeles:20240227T160000
DTSTAMP:20260404T215946
CREATED:20240128T225822Z
LAST-MODIFIED:20240224T002645Z
UID:3361-1709046000-1709049600@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: No Seminar
DESCRIPTION:No Seminar
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-orsola-capovilla-searle-uc-davis/
LOCATION:Estella 2099
CATEGORIES:Topology Seminar
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240227T121500
DTEND;TZID=America/Los_Angeles:20240227T131000
DTSTAMP:20260404T215946
CREATED:20240126T230120Z
LAST-MODIFIED:20240221T014138Z
UID:3354-1709036100-1709039400@colleges.claremont.edu
SUMMARY:The restricted variable Kakeya problem (Pete Clark\, University of Georgia)
DESCRIPTION:For a finite field F_q\, a subset of F_q^N is a Kakeya set if it contains a line in every direction (i.e.\, a coset of every one-dimensional linear subspace).  The finite field Kakeya problem is to determine the minimal size K(N\,q) of a Kakeya set in F_q^N.  This problem was posed by Wolff in 1999 as an analogue to the Kakeya problem in Euclidean N-space\, which was (and still is) one of the major open problems in harmonic analysis.  It caused quite a stir in 2008 when Zeev Dvir showed that for each fixed N\, as q -> oo\, K(N\,q) is bounded below by a constant times q^N: the Euclidean analogue of this result is not only proved but known to be false.\n\nBut what about the constant?  In 2009 Dvir-Kopparty-Saraf-Sudan gave a lower bound on K(N\,q) that was within a factor of 2 of an upper bound due to Dvir-Thas.  (I will briefly mention recent work of Bukh-Chao giving a decisive further improvement\, but that is not the focus of the talk.) The key to this improved lower bound is a multiplicity enhancement of a 1922 result of Ore. In this talk I want to give my own exposition of this work together with a mild generalization: if X is a subset of F_q^N \ {0}\, then an X-Kakeya set is a subset that contains a translate of the line generated by x for all x in X.  Putting K_X(N\,q) to be the minimal size of an X-Kakeya set in F_q^N\, I will give a lower bound on K_X(N\,q) that recovers the DKSS bound when X = F_q^N \ {0}.  This is similar in spirit to  “statistical Kakeya” results of Dvir and DKSS but not overlapping much; in fact\, I will give a statistical generalization of my result as well.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-pete-clark-university-of-georgia/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240226T161500
DTEND;TZID=America/Los_Angeles:20240226T171500
DTSTAMP:20260404T215946
CREATED:20240220T215244Z
LAST-MODIFIED:20240220T224116Z
UID:3391-1708964100-1708967700@colleges.claremont.edu
SUMMARY:Javier Gonzalez Anaya (Harvey Mudd College)
DESCRIPTION:This is the continuation of the semester’s joint seminar with the Universidad Nacional de Colombia-Manizales. \nTitle: Enumerating linearity regions of max-pooling layers in convolutional neural networks \nAbstract: Convolutional neural networks (CNN’s) are central tools in the application of machine learning to text\, audio and image processing. Their success stems from the ability of these networks to identify key features in complex datasets at a relatively low computational cost. Max-pooling layers (MPL’s) are key components of CNN’s that reduce the number of parameters used by the network while making it more robust to small changes in the input data. From a mathematical point of view\, MPLs are piecewise-linear functions\, and their number of linearity regions can be interpreted as a measure of complexity of the layer. In this talk I will explain how we can use combinatorial techniques to count these linearity regions\, and survey our current results in the area.
URL:https://colleges.claremont.edu/ccms/event/javier-gonzalez-anaya-harvey-mudd-college/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ami Radunskaya":MAILTO:aradunskaya@pomona.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240224
DTEND;VALUE=DATE:20240225
DTSTAMP:20260404T215946
CREATED:20240124T181450Z
LAST-MODIFIED:20240124T181543Z
UID:3348-1708732800-1708819199@colleges.claremont.edu
SUMMARY:14th WiMSoCal Symposium at Pomona
DESCRIPTION:The 14th Symposium for Women and Gender Minorities in Mathematics in Southern California \nWiMSoCal returns to SoCal after a four-year-hiatus due to pandemic. \nThe symposium will provide an opportunity for women and gender-nonconforming individuals in mathematics in the Southern California area to get to know each other on a personal as well as professional level.  \nOur aim is to create a network of mathematicians in the Southern California area in order to nurture collaborations and provide a framework for mentoring. These relationships can facilitate mathematicians branching into new areas of mathematics\, exploring the variety of ways of contributing mathematically to society and the profession\, and maintaining a healthy\, balanced life. \nAttendees of this symposium will: \n\nLearn about the research of women and gender-nonconforming mathematicians in Southern California \nPresent your work in a supportive environment \nNetwork with other Southern California mathematicians (students\, faculty\, and industry professionals)\nExplore issues surrounding being a woman and gender minority in mathematics \n\nAll are welcome to register and attend: \nhttps://sites.google.com/view/wimsocal2024 \nThis event is made possible partly by Pitzer’s generous Agnes Moreland Jackson Diversity Program Fund.
URL:https://colleges.claremont.edu/ccms/event/14th-wimsocal-symposium-at-pomona/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Special Event
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240221T161500
DTEND;TZID=America/Los_Angeles:20240221T173000
DTSTAMP:20260404T215946
CREATED:20240202T200558Z
LAST-MODIFIED:20240202T200558Z
UID:3374-1708532100-1708536600@colleges.claremont.edu
SUMMARY:Evolution of an Intriguing Recreational Math Problem (Shawn McMurran\, California State University San Bernardino)
DESCRIPTION:Title: Evolution of an Intriguing Recreational Math Problem \nSpeaker: Shawn McMurran\, California State University San Bernardino \nAbstract: Besides being popular and entertaining\, recreational mathematics problems are often of historical interest. In this presentation we will highlight the origin and evolution of one such simply stated yet deep problem. The problem emerged during the eighteenth century tucked into a primarily standard arithmetic text. Over the next two centuries\, several notable names contributed to a growing collection of extensions\, generalizations\, and solution strategies. In more recent years\, relatives of this versatile problem have remained ubiquitous. It is likely that most audience members are familiar with at least one of its incarnations. During our journey\, opportunities will be provided for the audience to engage with the problem and some of its variations. \n\n\n\n\n\nShawn McMurran is a professor of mathematics at California State University San Bernardino. She earned her PhD in mathematics from UC Riverside with a background in PDEs. Current areas of interest include mathematics education and history of mathematics. She and her colleague Jim Tattersall have enjoyed many years of collaboration on math history projects\, including the subject of this presentation.
URL:https://colleges.claremont.edu/ccms/event/evolution-of-an-intriguing-recreational-math-problem-shawn-mcmurran-california-state-university-san-bernardino/
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:20240220T150000
DTEND;TZID=America/Los_Angeles:20240220T160000
DTSTAMP:20260404T215946
CREATED:20240128T225522Z
LAST-MODIFIED:20240210T020345Z
UID:3356-1708441200-1708444800@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Puttipong Pongtanapaisan (Arizona State university)
DESCRIPTION:We welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Puttipong Pongtanapaisan (Arizona State University) \nTitle: Building Knotted Objects Efficiently \nAbstract: Knotted objects can be constructed by gluing together standard pieces called handles. Understanding the minimum number of handles required for construction and their sequential attachment provides valuable insights into the complexity of entanglement. Certain knots require specific types of handles to be attached first\, preventing them from fitting into small lattice tubes. This is particularly relevant as polymers in confinement are modeled as knots within lattice tubes. In this talk\, I will discuss methods for studying these handles and their attachment order using coloring games applied to link diagrams.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-puttipong-pongtanapaisan-arizona-state-university/
LOCATION:Estella 2099
CATEGORIES:Topology Seminar
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240220T121500
DTEND;TZID=America/Los_Angeles:20240220T131000
DTSTAMP:20260404T215946
CREATED:20231127T045722Z
LAST-MODIFIED:20240219T164238Z
UID:3328-1708431300-1708434600@colleges.claremont.edu
SUMMARY:Point-counting and topology of algebraic varieties (Siddarth Kannan\, UCLA)
DESCRIPTION:A projective algebraic variety X is the zero locus of a collection of homogeneous polynomials\, in projective space. When the polynomials have integer coefficients\, we can think of the k-valued points X(k) of the variety\, for any field k. Now suppose we have two different fields k and k’. How does the behavior of X(k) inform the behavior of X(k’)? It turns out that this is a rich line of inquiry. I will present a particularly pleasing example which relates the topology of the complex-valued points of X with the number of points it has over finite fields.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-siddarth-kannan-ucla/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240219T161500
DTEND;TZID=America/Los_Angeles:20240219T171500
DTSTAMP:20260404T215946
CREATED:20240220T215909Z
LAST-MODIFIED:20240220T215909Z
UID:3392-1708359300-1708362900@colleges.claremont.edu
SUMMARY:Cristian Lopez Morales (UNAL)
DESCRIPTION:Join us for the first talk in the joint seminar with CCMS Applied Math and the Universidad Nacional de Colombia \nTitle \nSerre Conjecture. Geometric interpretation of the Quillen-Suslin Theorem. \nAbstract: \nThe Quillen-Suslin theorem asserts that over the polynomial ring with coefficients in a field K[x_1\,…\,x_n]\, every projective module is free. Despite the algebraic nature of the objects involved in this theorem and its proof\, this is a problem motivated by geometry. \n\nOriginally\, this problem was proposed by the French mathematician Jean-Pierre Serre as one of his famous conjectures. In this talk\, we will discuss the original formulation of Serre’s conjecture (the Quillen-Suslin theorem)\, along with the necessary concepts to translate the geometric statement into the algebraic one.
URL:https://colleges.claremont.edu/ccms/event/cristian-lopez-morales-unal/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ami Radunskaya":MAILTO:aradunskaya@pomona.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240214T161500
DTEND;TZID=America/Los_Angeles:20240214T173000
DTSTAMP:20260404T215946
CREATED:20240210T024434Z
LAST-MODIFIED:20240210T024434Z
UID:3381-1707927300-1707931800@colleges.claremont.edu
SUMMARY:Mirror Symmetry and Zeta Values (Sheel Ganatra\, USC)
DESCRIPTION:Title: Mirror Symmetry and Zeta Values \nSpeaker: Sheel Ganatra\, University of Southern California \nAbstract: Mirror symmetry is a conjectural correspondence\, born out of ideas in string theory\, between two geometries of very different nature. In its earliest mathematical appearance\, mirror symmetry was used to make predictions for certain numerical measurements of one space in terms of utterly different calculations on a mirror space. Mysteriously\, certain famous arithmetic constants\, the Riemann zeta values\, were repeatedly observed to appear in the transformation taking measurements on one side to measurements on the mirror side.  I will survey these ideas and then present joint work with Abouzaid\, Iritani\, and Sheridan explaining a geometric origin for the appearance of these constants in mirror symmetry. \n\n\n\n\n\nSheel Ganatra is an Associate Professor at the University of Southern California. Prior to coming to USC in 2016\, he completed his PhD at MIT with Denis Auroux in 2012 (two years of which were on exchange at UC Berkeley) and spent 4 years as a Szegö Assistant Professor and NSF postdoctoral Fellow at Stanford. His research interests include symplectic geometry and mirror symmetry\, and he is the recipient of an NSF Career Award and a Simons Fellowship.
URL:https://colleges.claremont.edu/ccms/event/mirror-symmetry-and-zeta-values-sheel-ganatra-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:20240213T150000
DTEND;TZID=America/Los_Angeles:20240213T160000
DTSTAMP:20260404T215946
CREATED:20240124T181020Z
LAST-MODIFIED:20240129T194110Z
UID:3347-1707836400-1707840000@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Luya Wang (Stanford)
DESCRIPTION:We welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Luya Wang (Stanford) \nTitle: Deformation inequivalent symplectic structures and Donaldson’s four-six question \nAbstract: Studying symplectic structures up to deformation equivalences is a fundamental question in symplectic geometry. Donaldson asked: given two homeomorphic closed symplectic four-manifolds\, are they diffeomorphic if and only if their stabilized symplectic six-manifolds\, obtained by taking products with CP^1 with the standard symplectic form\, are deformation equivalent? I will discuss joint work with Amanda Hirschi on showing how deformation inequivalent symplectic forms remain deformation inequivalent when stabilized\, under certain algebraic conditions. This gives the first counterexamples to one direction of Donaldson’s “four-six” question and the related Stabilizing Conjecture by Ruan.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-luya-wang-stanford/
LOCATION:Estella 2099
CATEGORIES:Topology Seminar
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240213T121500
DTEND;TZID=America/Los_Angeles:20240213T131000
DTSTAMP:20260404T215946
CREATED:20240116T192503Z
LAST-MODIFIED:20240116T202510Z
UID:3335-1707826500-1707829800@colleges.claremont.edu
SUMMARY:Quiver categorification of quandle invariants (Sam Nelson\, CMC)
DESCRIPTION:Quiver structures are naturally associated to subsets of the endomorphism sets of quandles and other knot-coloring structures\, providing a natural form of categorification of homset invariants and their enhancements. In this talk we will survey recent work in this area.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-sam-nelson-cmc-3/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240212T161500
DTEND;TZID=America/Los_Angeles:20240212T171500
DTSTAMP:20260404T215946
CREATED:20240207T150322Z
LAST-MODIFIED:20240207T150322Z
UID:3378-1707754500-1707758100@colleges.claremont.edu
SUMMARY:Dagan Karp (Harvey Mudd College)
DESCRIPTION:Title: Tropical Linear Series\n\nAbstract: In this talk I’ll attempt to give a friendly and example-driven introduction to the theory of linear series on tropical curves. While in some respects mirroring the classical study of linear series\, in the tropical setting there are many surprises and even basic questions remain open. This work is joint with Chang Chih-Wei\, Hernan Iriarte\, David Jensen\, Sam Payne\, and Jidong Wang.
URL:https://colleges.claremont.edu/ccms/event/dagan-karp-harvey-mudd-college/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ami Radunskaya":MAILTO:aradunskaya@pomona.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240210T100000
DTEND;TZID=America/Los_Angeles:20240210T120000
DTSTAMP:20260404T215946
CREATED:20240123T234910Z
LAST-MODIFIED:20240123T234910Z
UID:3344-1707559200-1707566400@colleges.claremont.edu
SUMMARY:GEMS February 10th Session
DESCRIPTION:
URL:https://colleges.claremont.edu/ccms/event/gems-february-10th-session/
LOCATION:Harvey Mudd College at the Shanahan Teaching and Learning Center\, 301 Platt Blvd.\, Claremont\, CA\, 91711\, United States
CATEGORIES:GEMS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240207T161500
DTEND;TZID=America/Los_Angeles:20240207T173000
DTSTAMP:20260404T215946
CREATED:20240201T010113Z
LAST-MODIFIED:20240201T010113Z
UID:3373-1707322500-1707327000@colleges.claremont.edu
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
GEO:34.0999157;-117.7142668
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240131T161500
DTEND;TZID=America/Los_Angeles:20240131T173000
DTSTAMP:20260404T215946
CREATED:20240120T030122Z
LAST-MODIFIED:20240120T030122Z
UID:3343-1706717700-1706722200@colleges.claremont.edu
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
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:20240130T150000
DTEND;TZID=America/Los_Angeles:20240130T160000
DTSTAMP:20260404T215946
CREATED:20240124T180651Z
LAST-MODIFIED:20240128T224307Z
UID:3346-1706626800-1706630400@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Song Yu (Caltech)
DESCRIPTION:We welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Song Yu (California Institute of Technology and Tsinghua Yau Mathematical Sciences Center) also a Pomona alum! \nTitle: Knot invariants\, Gromov-Witten invariants\, and integrality conjectures \nAbstract: In this talk\, we will take a peek at large N duality which is a deep correspondence between invariants of knots in 3-manifolds and enumerative geometry in symplectic 6-manifolds discovered in physics in the 1980-90s. On the numerical level\, the correspondence relates Chern-Simons knot invariants to open Gromov-Witten invariants which are counts of bordered Riemann surfaces with Lagrangian boundary conditions\, and has led to predictions on the integrality structures of both invariants. We will discuss recent progress on the enumerative geometry side and connections to known integrality properties in Gromov-Witten theory. \n  \n 
URL:https://colleges.claremont.edu/ccms/event/topology-seminar-song-yu-caltech/
LOCATION:Estella 2099
CATEGORIES:Topology Seminar
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240129T041500
DTEND;TZID=America/Los_Angeles:20240129T171500
DTSTAMP:20260404T215946
CREATED:20240125T032110Z
LAST-MODIFIED:20240125T032138Z
UID:3350-1706501700-1706548500@colleges.claremont.edu
SUMMARY:Applied Math Seminar: Adolfo Rumbos (Pomona College)
DESCRIPTION:Title: Existence and multiplicity of solutions for a cooperative elliptic system using Morse theory \nThis is joint work with Leandro Recova (Cal Poly Pomona) \nAbstract
URL:https://colleges.claremont.edu/ccms/event/applied-math-seminar-adolfo-rumbos-pomona-collegeo/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ami Radunskaya":MAILTO:aradunskaya@pomona.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240124T161500
DTEND;TZID=America/Los_Angeles:20240124T173000
DTSTAMP:20260404T215946
CREATED:20240118T192512Z
LAST-MODIFIED:20240118T192512Z
UID:3339-1706112900-1706117400@colleges.claremont.edu
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
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:20240123T121500
DTEND;TZID=America/Los_Angeles:20240123T131000
DTSTAMP:20260404T215946
CREATED:20231020T203433Z
LAST-MODIFIED:20240117T005624Z
UID:3294-1706012100-1706015400@colleges.claremont.edu
SUMMARY:Using quantum statistical mechanical systems to study real quadratic fields (Jane Panangaden\, Pitzer College)
DESCRIPTION:The original Bost-Connes system was constructed in 1990 and is a QSM system with deep connections to the field of rationals. In particular\, its partition function is the Riemann-zeta function and its ground states evaluated on certain arithmetic objects yield generators of the maximal Abelian extension of the rationals. In this talk we describe the construction of a related QSM system adapted to the study of real quadratic fields\, called the Boundary GL2 System. We describe its thermal properties and show how these relate to class field theory of real quadratic fields. These results are joint work with Matilde Marcolli.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-jane-panangaden-pitzer-college/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231205T121500
DTEND;TZID=America/Los_Angeles:20231205T131000
DTSTAMP:20260404T215946
CREATED:20230926T180257Z
LAST-MODIFIED:20231130T000041Z
UID:3260-1701778500-1701781800@colleges.claremont.edu
SUMMARY:Skein algebra of a punctured surface (Helen Wong\, CMC)
DESCRIPTION:The Kauffman bracket skein algebra of a surface is at once related to quantum topology and to hyperbolic geometry. In this talk\, we consider a generalization of the skein algebra due to Roger and Yang for surfaces with punctures. In joint work with Han-Bom Moon\, we show that the generalized skein algebra is a quantization of Penner’s decorated Teichmuller space\, which consists of complete metrics of the surface with extra decoration at the punctures. Interestingly\, our proof relies on a connection between the skein algebra and the cluster algebras of tagged arcs due to Fomin\, Shapiro\, and Thurston.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-helen-wong-cmc-2/
LOCATION:Roberts North 102\, CMC
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231202T100000
DTEND;TZID=America/Los_Angeles:20231202T120000
DTSTAMP:20260404T215946
CREATED:20230911T161548Z
LAST-MODIFIED:20230911T161548Z
UID:3188-1701511200-1701518400@colleges.claremont.edu
SUMMARY:GEMS December 2nd Session
DESCRIPTION:
URL:https://colleges.claremont.edu/ccms/event/gems-december-2nd-session/
LOCATION:Shanahan 1480\, Harvey Mudd College\, 301 Platt Blvd.\, Claremont\, CA\, 91711\, United States
CATEGORIES:GEMS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231129T161500
DTEND;TZID=America/Los_Angeles:20231129T173000
DTSTAMP:20260404T215946
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
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:20231128T150000
DTEND;TZID=America/Los_Angeles:20231128T160000
DTSTAMP:20260404T215946
CREATED:20231115T195911Z
LAST-MODIFIED:20231115T195911Z
UID:3322-1701183600-1701187200@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Melody Molander (UCSB)
DESCRIPTION:Title: Skein Theory of Affine ADE Subfactor Planar Algebras \nAbstract: Subfactor planar algebras first were constructed by Vaughan Jones as a diagrammatic axiomatization of the standard invariant of a subfactor. These planar algebras also encode two other invariants of the subfactors: the index and the principal graph. The Kuperberg Program asks to find all diagrammatic presentations of subfactor planar algebras. This program has been completed for index less than 4. In this talk\, I will introduce subfactor planar algebras and give some presentations of subfactor planar algebras of index 4 which have affine ADE Dynkin diagrams as their principal graphs.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-melody-molander-ucsb/
LOCATION:Fletcher 110\, Pitzer College\, 1050 N Mills Ave\, Claremont\, CA\, 91711\, United States
CATEGORIES:Topology Seminar
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231128T121500
DTEND;TZID=America/Los_Angeles:20231128T131000
DTSTAMP:20260404T215946
CREATED:20231009T153250Z
LAST-MODIFIED:20231121T192204Z
UID:3281-1701173700-1701177000@colleges.claremont.edu
SUMMARY:What can chicken nuggets tell us about symmetric functions\, positive polynomials\, random norms\, and AF algebras? (Stephan Garcia\, Pomona)
DESCRIPTION:A simple question about chicken nuggets connects everything from analysis and combinatorics to probability theory and computer-aided design.  With tools from complex\, harmonic\, and functional analysis\, probability theory\, algebraic combinatorics\, and spline theory\, we answer many asymptotic questions about factorization lengths in numerical semigroups.  Our results yield uncannily accurate predictions\, along with unexpected results about symmetric functions\, trace polynomials\, and the statistical properties of certain AF C$^*$-algebras.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-stephan-garcia-pomona/
LOCATION:Roberts North 102\, CMC
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231121T121500
DTEND;TZID=America/Los_Angeles:20231121T131000
DTSTAMP:20260404T215946
CREATED:20231009T193529Z
LAST-MODIFIED:20231119T201433Z
UID:3282-1700568900-1700572200@colleges.claremont.edu
SUMMARY:On the Cox ring of a weighted projective plane blown-up at a point (Javier Gonzalez Anaya\, HMC)
DESCRIPTION:The Cox ring of a projective variety is the ring of all its meromorphic functions\, together with a grading of geometric origin. Determining whether this ring is finitely generated is a challenging task\, even for simple examples. In this talk\, we will discuss our efforts to tackle this problem for a specific class of varieties\, known as blow-ups of weighted projective planes (WPP). Through the lens of toric geometry\, a WPP is characterized by a rational plane triangle. This allows us to reinterpret the problem combinatorially and show that the solution often emerges from a parameter space of such triangles. This is joint work with José Luis González and Kalle Karu.
URL:https://colleges.claremont.edu/ccms/event/antc-seminar-javier-gonzalez-anaya-hmc/
LOCATION:Roberts North 102\, CMC
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231120T150000
DTEND;TZID=America/Los_Angeles:20231120T160000
DTSTAMP:20260404T215946
CREATED:20230913T033352Z
LAST-MODIFIED:20230914T153254Z
UID:3217-1700492400-1700496000@colleges.claremont.edu
SUMMARY:History and Philosophy of Mathematics Seminar: Julia Tomasson (Columbia University)
DESCRIPTION:Inventing the ‘Islamic Golden Age’: Orientalism and the History of Mathematics \nAbstract: TBA
URL:https://colleges.claremont.edu/ccms/event/history-and-philosophy-of-mathematics-seminar-julia-tomasson-columbia-university/
LOCATION:On Zoom
CATEGORIES:History and Philosophy of Mathematics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231116T163000
DTEND;TZID=America/Los_Angeles:20231116T173000
DTSTAMP:20260404T215946
CREATED:20231113T045911Z
LAST-MODIFIED:20231113T045911Z
UID:3319-1700152200-1700155800@colleges.claremont.edu
SUMMARY:Continued fractions\, directed graphs\, and defining spectral triples on Effros-Shen AF algebras (Samantha Brooker\, Arizona State University)
DESCRIPTION:The Effros-Shen algebra corresponding to an irrational number $\theta$ can be described by an inductive sequence of direct sums of matrix algebras\, where the continued fraction expansion of $\theta$ encodes the dimensions of the summands\, and how the matrix algebras at the nth level fit into the summands at the (n+1)th level. In recent work\, Mitscher and Spielberg present an Effros-Shen algebra as the C*-algebra of a category of paths – a generalization of a directed graph – determined by the continued fraction expansion of \theta. With this approach\, the algebra is realized as the inductive limit of a sequence of infinite-dimensional\, rather than finite-dimensional\, subalgebras. Drawing on a construction by Christensen and Ivan\, we use this inductive limit structure to define a spectral triple\, trading the advantages of working with finite-dimensional approximants for the techniques provided by the category of paths\, pursuant to studying the algebras as quantum compact metric spaces. I will discuss categories of paths and their precursors\, graph C*-algebras\, the example of Mitscher and Spielberg\, and a bit about the spectral triple construction. This is joint work with Konrad Aguilar and Jack Spielberg.
URL:https://colleges.claremont.edu/ccms/event/continued-fractions-directed-graphs-and-defining-spectral-triples-on-effros-shen-af-algebras-samantha-brooker-arizona-state-university/
LOCATION:Estella 2141\, 610 N College Ave\, Claremont\, 91711\, United States
CATEGORIES:Analysis Seminar
ORGANIZER;CN="Asuman Aksoy":MAILTO:asuman.aksoy@claremontmckenna.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231115T161500
DTEND;TZID=America/Los_Angeles:20231115T173000
DTSTAMP:20260404T215946
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
END:VCALENDAR