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DTSTART;TZID=America/Los_Angeles:20250422T121500
DTEND;TZID=America/Los_Angeles:20250422T131000
DTSTAMP:20260405T110312
CREATED:20250304T000158Z
LAST-MODIFIED:20250421T175544Z
UID:3727-1745324100-1745327400@colleges.claremont.edu
SUMMARY:Algebraic properties of linguistic structure (Isabella Senturia\, Yale / Caltech)
DESCRIPTION:The recognition that theoretical models of natural language syntax have robust algebraic foundations is longstanding. Both the syntactic structures proposed (trees\, semirings\, etc.) and metrics developed to understand them (the Chomsky hierarchy\, partial orders\, and so forth) closely resemble structures and systems familiar to theoretical mathematicians (groups\, rings\, fields\, …). Despite the underlying mathematical tools\, rarely do structural properties of language get analyzed at an algebraic level. I use two complementary perspectives\, one representational and continuous (spectral graph theory) and one derivational and discrete (Hopf algebras)\, as lenses to explore mathematical properties of linguistic structure. I will also show a connection between the two approaches through a case study on the problem of learning syntactic parameters.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-isabella-senturia-yale-caltech/
LOCATION:Estella 2113
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250422T150000
DTEND;TZID=America/Los_Angeles:20250422T160000
DTSTAMP:20260405T110312
CREATED:20250303T212722Z
LAST-MODIFIED:20250303T212722Z
UID:3724-1745334000-1745337600@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Sam Nelson (Claremont McKenna College)
DESCRIPTION:We especially welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: Sam Nelson (Claremont McKenna College) \nTitle: Virtual Biquandle Cocycle Quiver Representations \nAbstract: We construct a quiver representation valued invariant of virtual knots and links using virtual biquandle homology.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-sam-nelson-claremont-mckenna-college/
LOCATION:Estella 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, United States
CATEGORIES:Topology Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250423T161500
DTEND;TZID=America/Los_Angeles:20250423T173000
DTSTAMP:20260405T110312
CREATED:20250131T235210Z
LAST-MODIFIED:20250417T222240Z
UID:3677-1745424900-1745429400@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Agent-Based and Continuous Models of Locust Hopper Bands (Andrew J. Bernoff\, Harvey Mudd College\, CA)
DESCRIPTION:Speaker: Andrew J. Bernoff\, Professor of Mathematics\, Harvey Mudd College \nAbstract: An outstanding challenge in mathematical biology is using laboratory and/or field observations to tune a model’s functional form and parameter values. These problems lie at the intersection of dynamical systems and data science. In this talk I will discuss an ongoing project developing models of the Australian plague locust for which excellent field data is available. Under favorable environmental conditions flightless juveniles aggregate into coherent\, aligned swarms referred to as hopper bands. We develop two models of hopper bands in tandem; an agent-based model that tracks the position of individuals and a continuum model describing locust density. By examining 4.4 million parameter combinations\, we identify a set of parameters that reproduce field observations. \nI will then discuss ongoing efforts to improve these models. The first extends this work by modeling locust alignment via the Kuramoto model of oscillator synchronization. The second uses motion tracking of tens of thousands of locusts to shed light on how locust movement is influenced by social interactions. \n  \nBio: Andrew Bernoff is a Professor of Mathematics whose research focuses on applying dynamical systems to physical and biological phenomena\, with notable international recognition for his work on swarming. He earned degrees in math and physics from MIT and a  PhD from the University of Cambridge as a Marshall Scholar. With over 50 published papers and multiple NSF and Simons Foundation grants\, his interdisciplinary collaborations span physics\, engineering\, chemistry\, and biology. \nA dedicated educator\, Bernoff has mentored over 60 undergraduate research projects at Harvey Mudd College\, with many students pursuing PhDs at top institutions. He has served in leadership roles including Director of the Claremont Center for Mathematical Sciences\, Chair of the SIAM Dynamical Systems Group\, and a co-author of the Putnam Exam (2019–2021).
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-shivkumar-chandrasekaran-uc-santa-barbara/
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:20250425T131500
DTEND;TZID=America/Los_Angeles:20250425T141500
DTSTAMP:20260405T110312
CREATED:20250423T051049Z
LAST-MODIFIED:20250423T051555Z
UID:3768-1745586900-1745590500@colleges.claremont.edu
SUMMARY:Data Science / Statistics Seminar: Ana Maria Kenney (UC Irvine)
DESCRIPTION:Speaker: Ana Maria Kenney\, Assistant Professor\, Department of Statistics\, UC Irvine \nTitle: Distilling heterogeneous treatment effects: Stable subgroup estimation in causal inference \nAbstract: Recent methodological developments have introduced new black-box approaches to better estimate heterogeneous treatment effects; however\, these methods fall short of providing interpretable characterizations of the underlying individuals who may be most at risk or benefit most from receiving the treatment\, thereby limiting their practical utility. In this work\, we introduce a novel method\, causal distillation trees (CDT)\, to estimate interpretable subgroups. CDT allows researchers to fit any machine learning model of their choice to estimate the individual-level treatment effect\, and then leverages a simple\, second-stage tree-based model to “distill” the estimated treatment effect into meaningful subgroups. As a result\, CDT inherits the improvements in predictive performance from black-box machine learning models while preserving the interpretability of a simple decision tree. We derive theoretical guarantees for the consistency of the estimated subgroups using CDT\, and introduce stability-driven diagnostics for researchers to evaluate the quality of the estimated subgroups. We illustrate our proposed method on a randomized controlled trial of antiretroviral treatment for HIV from the AIDS Clinical Trials Group Study 175 and show that CDT out-performs state-of-the-art approaches in constructing stable\, clinically relevant subgroups. \nBio: Ana Maria Kenney is an Assistant Professor in the Department of Statistics at UC Irvine. She works at the interface of statistics\, interpretable machine learning\, and large-scale optimization to advance biomedical research. She has been on several interdisciplinary teams across institutions spanning cardiovascular genetics\, “Omics” contributions to early infant growth\, and early cancer screening. She completed a postdoc at UC Berkeley and previously received a dual title Ph.D. at Penn State in Statistics and Operations Research. There she was a Biomedical Big Data to Knowledge Training Fellow and Alfred P. Sloan Ph.D. Scholar.
URL:https://colleges.claremont.edu/ccms/event/data-science-statistics-seminar-ana-maria-kenney-uc-irvine/
LOCATION:Roberts North 15\, CMC\, 320 E. 9th St.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250428T161500
DTEND;TZID=America/Los_Angeles:20250428T171500
DTSTAMP:20260405T110312
CREATED:20250426T011634Z
LAST-MODIFIED:20250426T011735Z
UID:3772-1745856900-1745860500@colleges.claremont.edu
SUMMARY:Applied Math Seminar: Alejandra Castillo (Pomona College)
DESCRIPTION:Title:    Randomized Kaczmarz Methods for Corrupted Tensor Linear Systems \nAbstract: Recovering tensor-valued signals from corrupted measurements is a central problem in various applications such as hyperspectral image reconstruction and medical imaging. This talk considers tensor linear systems of the form AX = B\, that contain observations potentially affected by sparse\, large-magnitude corruptions.  A quantile-based randomized Kaczmarz algorithm\, called quantile tensor randomized Kaczmarz (QTRK)\, is discussed to address this challenge. By integrating quantile statistics into the iterative update process\, QTRK improves robustness against adversarial errors. A variant selectively omits unreliable measurements to enhance stability further.
URL:https://colleges.claremont.edu/ccms/event/applied-math-seminar-alejandra-castillo-pomona-college/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250429T150000
DTEND;TZID=America/Los_Angeles:20250429T160000
DTSTAMP:20260405T110312
CREATED:20250303T212829Z
LAST-MODIFIED:20250428T212953Z
UID:3725-1745938800-1745942400@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: David Bachman (Pitzer College)
DESCRIPTION:We especially welcome all undergraduates and graduate students to attend topology seminar! \nSpeaker: David Bachman (Pitzer College) \nTitle: Learning optimal knot projections \nAbstract: We use techniques from Reinforcement Learning to find knot projections which minimize crossing number.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-david-bachman-pitzer-college/
LOCATION:Estella 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, United States
CATEGORIES:Topology Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250430T161500
DTEND;TZID=America/Los_Angeles:20250430T173000
DTSTAMP:20260405T110312
CREATED:20250131T235446Z
LAST-MODIFIED:20250428T233421Z
UID:3679-1746029700-1746034200@colleges.claremont.edu
SUMMARY:CCMS Colloquium presents the Second Barbara Beechler Talk: Deanna Needell (UCLA)
DESCRIPTION:CCMS Colloquium invites you to the Second Barbara Beechler Lecture by Professor Deanna Needell\, Professor of Mathematics\, Dunn Family Endowed Chair in Data Theory\nExecutive Director\, Institute for Digital Research and Education (IDRE) at UCLA. \nTitle: Fairness and Foundations in Machine Learning \nAbstract: In this talk\, we will address areas of recent work centered around the themes of fairness and foundations in machine learning as well as highlight the challenges in this area. We will discuss recent results involving linear algebraic tools for learning\, such as methods in non-negative matrix factorization that include tailored approaches for fairness. We will showcase our approach as well as practical applications of those methods.  Then\, we will discuss new foundational results that theoretically justify phenomena like benign overfitting in neural networks.  Throughout the talk\, we will include example applications from collaborations with community partners\, using machine learning to help organizations with fairness and justice goals. This talk includes work joint with Erin George\, Kedar Karhadkar\, Lara Kassab\, and Guido Montufar. \nSpeaker Bio: Deanna Needell earned her PhD from UC Davis before working as a postdoctoral fellow at Stanford University. She is currently a full professor of mathematics at UCLA\, the Dunn Family Endowed Chair in Data Theory\, and the Executive Director for UCLA’s Institute for Digital Research and Education. She has earned many awards including the Alfred P. Sloan fellowship\, an NSF CAREER and other awards\, the IMA prize in Applied Mathematics\, is a 2022 American Mathematical Society (AMS) Fellow and a 2024 Society for industrial and applied mathematics (SIAM) Fellow. She has been a research professor fellow at several top research institutes including the SLMath (formerly MSRI) and Simons Institute in Berkeley. She also serves as associate editor for several journals including Linear Algebra and its Applications and the SIAM Journal on Imaging Sciences\, as well as on the organizing committee for SIAM sessions and the Association for Women in Mathematics. \n 
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-second-barbara-beechler-talk/
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:20250505T161500
DTEND;TZID=America/Los_Angeles:20250505T171500
DTSTAMP:20260405T110312
CREATED:20250130T003036Z
LAST-MODIFIED:20250327T174327Z
UID:3669-1746461700-1746465300@colleges.claremont.edu
SUMMARY:Applied Math Seminar: Evan Rosenman (Claremont McKenna College)
DESCRIPTION:Title: TBA \nAbstract: TBA
URL:https://colleges.claremont.edu/ccms/event/applied-math-seminar-evan-rosenman-claremont-mckenna-college/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250507T161500
DTEND;TZID=America/Los_Angeles:20250507T173000
DTSTAMP:20260405T110312
CREATED:20250131T235319Z
LAST-MODIFIED:20250313T165841Z
UID:3678-1746634500-1746639000@colleges.claremont.edu
SUMMARY:CCMS Colloquium presents "Career Panel"
DESCRIPTION:TBA
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-presents-career-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:20250902T121500
DTEND;TZID=America/Los_Angeles:20250902T131000
DTSTAMP:20260405T110312
CREATED:20250814T025232Z
LAST-MODIFIED:20250819T024559Z
UID:3787-1756815300-1756818600@colleges.claremont.edu
SUMMARY:Categorification of biquandle arrow weight invariants via quivers (Migiwa Sakurai\, Shibaura Institute of Technology)
DESCRIPTION:Biquandle arrow weights invariants are enhancements of the biquandle counting invariant for oriented virtual and classical knots defined from biquandle-colored Gauss diagrams using a tensor over an abelian group satisfying certain properties. In this talk\, we categorify the biquandle arrow weight polynomial invariant using biquandle coloring quivers\, obtaining new infinite families of polynomial invariants of oriented virtual and classical knots.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-migiwa-sakurai-shibaura-institute-of-technology/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250908T161500
DTEND;TZID=America/Los_Angeles:20250908T171500
DTSTAMP:20260405T110312
CREATED:20250829T233038Z
LAST-MODIFIED:20250902T231307Z
UID:3810-1757348100-1757351700@colleges.claremont.edu
SUMMARY:The Shooting Method in the Analysis of Two-Point Boundary-Value Problems (Adolfo J. Rumbos\, Pomona College)
DESCRIPTION:Abstract: \nTwo-point boundary-value problems (BVPs) appear frequently in applied mathematics.  When looking for solutions of boundary-value problems for some partial differential equations (PDEs) in mathematical physics\, two-point BVPs come up as a result of applying the method of separation of variables\, for instance. In the case of linear PDEs\, the resulting two-point BVPs fall into a class of problems known as Sturm-Liouville eigenvalue problems. \nThis presentation deals with the use of the shooting method to prove existence of solutions of two-point BVPs.  The shooting method is a numerical technique used to estimate solutions of two-point BVPs once a solution is known to exist.  In this talk we illustrate how the shooting method can be used to prove existence of eigenvalues of linear Sturm-Liouville problems.  We also show how the shooting method can be applied to prove existence and uniqueness of solutions for some nonlinear\, two-point BVPs\, and existence of eigenvalues for some nonlinear eigenvalue problems. \nThe presentation describes research conducted with collaborators Vaidehi Srinivasan (Pomona College class of 2027) and Gavin Zhao (Pomona College class of 2029) in the summer of 2025 with the support of the Summer Undergraduate Research Program at Pomona College.
URL:https://colleges.claremont.edu/ccms/event/the-shooting-method-in-the-analysis-of-two-point-boundary-value-problems-adolfo-j-rumbos-pomona-college/
LOCATION:CA
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ryan Aschoff":MAILTO:ryan.aschoff@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250912T110000
DTEND;TZID=America/Los_Angeles:20250912T120000
DTSTAMP:20260405T110312
CREATED:20250903T160356Z
LAST-MODIFIED:20250909T001255Z
UID:3816-1757674800-1757678400@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Morse theory\, Floer homology\, and string topology (Ko Honda\, UCLA)
DESCRIPTION:CCMS Colloquium invites you to a talk by Professor Ko Honda\, Professor of Mathematics at UCLA. \nTitle: Morse theory\, Floer homology\, and string topology \nAbstract: One of the most important theories in geometry/topology is Floer homology\, which can be viewed as a Morse theory of a loop space of a manifold (a generalization of a surface to higher dimensions).  The aim of this talk is to give a gentle pictorial introduction to Morse theory for surfaces and then upgrade it in two steps: to Morse theory of loop spaces (e.g.\, of the 2-dimensional sphere) and then to “multiloops” (collections of many loops).  The last upgrade is intimately related to a mathematical model for string theory called “string topology”\, due to Chas-Sullivan\, and to quantum topology via the HOMFLY polynomial of knots/links. \nSpeaker Bio: Ko Honda is an entirely American-trained mathematician\, receiving his BA and MA from Harvard University in 1992 and PhD from Princeton University in 1997.  After postdocs/visiting positions at Duke\, the University of Georgia\, the American Institute of Mathematics\, and IHES\, he arrived in LA in 2001\, was a faculty member at USC for 12.5 years\, and then moved across town to UCLA\, where he has been for the last 11.5 years.  Sometime during his postdoc at Duke\, he discovered/invented an object called a “bypass” in contact geometry\, which allowed him to simplify the analysis of 3-dimensional contact manifolds and solve several open problems in that area\, some in joint work with Colin\, Etnyre\, and Giroux.  He has been working on contact and symplectic geometry ever since\, gradually branching out into adjacent areas (e.g.\, low-dimensional topology\, Floer theory\, and quantum topology) in the intervening years.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-presents-title-ko-honda/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250915T161500
DTEND;TZID=America/Los_Angeles:20250915T171500
DTSTAMP:20260405T110312
CREATED:20250829T233516Z
LAST-MODIFIED:20250922T153423Z
UID:3811-1757952900-1757956500@colleges.claremont.edu
SUMMARY:LA City Council Reform: A Statistical Study of Alternatives (Evan Rosenman & Sarah Cannon\, Claremont McKenna College)
DESCRIPTION:Abstract: \nThe 2022 Los Angeles City Council scandal intensified public demand for governance reform\, leading to the creation of the Los Angeles Charter Reform Commission. The commission is now considering proposals from civic and academic groups. Major recommendations include: eliminating the automatic election of candidates who win a primary majority\, expanding the size of the City Council\, and adopting alternative electoral systems such as multimember districts and ranked-choice voting. \nThis project offers a rigorous\, data-driven evaluation of these proposals\, focusing on their implications for proportionality\, racial representation\, and electoral responsiveness. We combine methods from Statistics and Computer Science\, including Bayesian ethnicity imputation\, ecological inference\, and advanced graph-sampling algorithms to explore district boundaries. This hybrid approach provides new insights into Los Angeles’s political geography and the challenges of building a fair\, representative City Council. By providing empirical evidence on the strengths and weaknesses of various districting systems\, our work aims to inform policymaking and advance democratic representation in Los Angeles.
URL:https://colleges.claremont.edu/ccms/event/la-city-council-reform-a-statistical-study-of-alternatives-evan-rosenman-claremont-mckenna-college/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ryan Aschoff":MAILTO:ryan.aschoff@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250916T121500
DTEND;TZID=America/Los_Angeles:20250916T131000
DTSTAMP:20260405T110312
CREATED:20250809T192948Z
LAST-MODIFIED:20250811T173854Z
UID:3780-1758024900-1758028200@colleges.claremont.edu
SUMMARY:A non-uniformly inner amenable group (Isaac Goldbring\, UC Irvine)
DESCRIPTION:An inner amenable group is one in which there is a finitely additive conjugation-invariant probability measure on the non-identity elements.  In this talk\, we show that inner amenability is not preserved under elementary equivalence.  As a result\, we give the first example of a group that is inner amenable but not uniformly inner amenable.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-isaac-goldbring-uc-irvine/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250919T110000
DTEND;TZID=America/Los_Angeles:20250919T120000
DTSTAMP:20260405T110312
CREATED:20250903T163230Z
LAST-MODIFIED:20250917T194549Z
UID:3817-1758279600-1758283200@colleges.claremont.edu
SUMMARY:NO CCMS Colloquium this Friday!
DESCRIPTION:We’ll be back next week!
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250923T121500
DTEND;TZID=America/Los_Angeles:20250923T131000
DTSTAMP:20260405T110312
CREATED:20250811T185820Z
LAST-MODIFIED:20250813T192625Z
UID:3783-1758629700-1758633000@colleges.claremont.edu
SUMMARY:Graphical designs: combinatorics and applications (Catherine Babecki\, Caltech)
DESCRIPTION:A graphical design is a quadrature rule for a graph inspired by classical numerical integration on the sphere. Broadly speaking\, that means a graphical design is a relatively small subset of graph vertices chosen to capture the global behavior of functions from the vertex set to the real numbers. We first motivate and define graphical designs for graphs with positive edge weights. Through Gale duality\, we exhibit a combinatorial bijection between graphical designs and the faces of certain polytopes associated to a graph\, called eigenpolytopes. This polytope connection implies a variety of beautiful consequences\, including a proof of existence\, an upper bound on the cardinality of a graphical design\, methods to compute\, optimize\, and organize graphical designs\, the existence of random walks with improved convergence rates\, and complexity results for associated computational problems.  We conclude with applications to the equitable facility location problem.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-catherine-babecki-caltech/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250925T160000
DTEND;TZID=America/Los_Angeles:20250925T170000
DTSTAMP:20260405T110312
CREATED:20250915T214113Z
LAST-MODIFIED:20250915T215619Z
UID:3836-1758816000-1758819600@colleges.claremont.edu
SUMMARY:Analysis seminar: Geometric classification problems with the Bergman metric (John Treuer\, UCSD)
DESCRIPTION:Title: Geometric classification problems with the Bergman metric \nAbstract: One of the common problems in mathematics is the classification problem: When are two mathematical structures really the same? The classification problem appears throughout undergraduate mathematics courses in different forms. For example\, in an abstract algebra course\, one asks when are two groups isomorphic? In a geometry course\, one asks when are two surfaces isometric? In a discrete math course\, one asks when are two sets bijective? The version in complex analysis is when are two domains (open\, connected sets) biholomorphic to each other? \nIn this talk\, we will begin by defining the primarily studied functions in complex analysis\, the complex differentiable functions also known as the holomorphic functions. We will then study the classification problem through the Bergman kernel and the Bergman metric. Towards the end of the talk\, recent progress on classifying domains and complex manifolds with Bergman metrics of constant holomorphic sectional curvature will be presented.
URL:https://colleges.claremont.edu/ccms/event/analysis-seminar-john-treuer-ucsd/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Analysis Seminar
ORGANIZER;CN="Asuman Aksoy":MAILTO:asuman.aksoy@claremontmckenna.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250926T110000
DTEND;TZID=America/Los_Angeles:20250926T121500
DTSTAMP:20260405T110312
CREATED:20250917T194906Z
LAST-MODIFIED:20250922T185920Z
UID:3839-1758884400-1758888900@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Robert Cass (CMC)
DESCRIPTION:CCMS Colloquium invites you to a talk by Assistant Professor of Mathematics Robert Cass of Claremont McKenna College:\n\n \nTitle: An introduction to the Langlands program\n \nAbstract: Class field theory\, which was established in the early 20th century\, has its origins in Gauss’s law of quadratic reciprocity. As such\, it allows one to determine whether certain integer polynomials have a root mod p. The Langlands program is a vast area of current research in number theory that can be viewed as a generalization of class field theory to all integer polynomials. In this talk\, I will give a leisurely introduction to this circle of ideas by way of some concrete examples. I will conclude with my own work\, which includes a result on the independence of the cohomology theory chosen in a geometric and categorical analogue of the Langlands program.\n \nBrief Bio: Robert Cass joined the Mathematical Sciences Department at CMC as an Assistant Professor of Mathematics this fall. He received his B.S. from the University of Kentucky and his Ph.D. from Harvard University. After that\, he was an NSF postdoctoral fellow at Caltech and the University of Michigan. He is interested in the Langlands program and arithmetic geometry\, as well as related problems in algebraic geometry and representation theory. He enjoys mathematical questions that are simple to state but whose solutions involve tools from multiple disciplines\, especially those with unexpected connections to geometry.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-robert-cass-cmc/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250929T161500
DTEND;TZID=America/Los_Angeles:20250929T171500
DTSTAMP:20260405T110312
CREATED:20250922T153239Z
LAST-MODIFIED:20250922T153239Z
UID:3850-1759162500-1759166100@colleges.claremont.edu
SUMMARY:Bounds and Extremal Examples for the Hot Spots Ratio (Alex Hsu\, University of Washington)
DESCRIPTION:Abstract: The shape of the fluctuations as heat approaches equilibrium in an insulated body are governed by the first Neumann eigenfunction of the Laplacian. Rauch’s hot spots conjecture states that the extrema of the first nontrivial Neumann Laplacian eigenfunction for a Lipschitz domain lies on the boundary. While this conjecture is false in general\, its failure can be measured by the hot spots ratio\, defined as the maximum over the entire domain divided by the maximum on the boundary. We determine the supremum of this quantity over all Lipschitz domains in every dimension $d$ and construct a sequence of sets for which the hot spots ratio approach this supremum. As $d\to \infty$\, this maximal ratio converges to $\sqrt{e}$\, which matches the previously best known upper bounds.
URL:https://colleges.claremont.edu/ccms/event/bounds-and-extremal-examples-for-the-hot-spots-ratio-alex-hsu-university-of-washington/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ryan Aschoff":MAILTO:ryan.aschoff@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250930T121500
DTEND;TZID=America/Los_Angeles:20250930T131000
DTSTAMP:20260405T110312
CREATED:20250927T185625Z
LAST-MODIFIED:20250927T185625Z
UID:3874-1759234500-1759237800@colleges.claremont.edu
SUMMARY:Algebraic lattices and Pisot polynomials (Lenny Fukshansky\, CMC)
DESCRIPTION:A Z-module M in a number field K gives rise to a lattice in the corresponding Euclidean space via Minkowski embedding. Such lattices often carry inherited structure from the number field in question and can be attractive from both\, theoretical and applied perspectives. We consider this construction when M is spanned by the set of roots of an irreducible polynomial f(x) of prime degree n. In this case\, the resulting lattice has rank n or n-1 and includes the Galois group of f(x) as a subgroup of its automorphism group. Of particular interest is the case of Pisot polynomials\, i.e.\, polynomials with one positive real root and the rest of the roots in the unit circle. We construct infinite families of such polynomials of any prime degree for which the resulting lattices have bases of minimal vectors\, a property of interest in coding theory and cryptography applications. In case of the Galois group being cyclic\, A_n\, or S_n we derive formulas for the determinant of the lattice in terms of the symmetric functions of the roots of f(x). This is joint work with Evelyne Knight (Pomona College).
URL:https://colleges.claremont.edu/ccms/event/algebraic-lattices-and-pisot-polynomials-lenny-fukshansky-cmc/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251002T160000
DTEND;TZID=America/Los_Angeles:20251002T170000
DTSTAMP:20260405T110312
CREATED:20250922T013036Z
LAST-MODIFIED:20250922T013226Z
UID:3847-1759420800-1759424400@colleges.claremont.edu
SUMMARY:Analysis seminar: Transfinite Apollonian metric (Zair Ibragimov\, CSU Fullerton)
DESCRIPTION:Title: Transfinite Apollonian metric \nAbstract: The concept of transfinite diameter of compact sets in the complex plane was introduced by Fekete in 1923. It is a generalization of the standard diameter of sets and has found many applications in the study of conformal mappings. The Apollonian metric was introduced by A. Beardon in 1995 and has since been used in the study of non-Euclidean geometries\, hyperbolic-type metrics\, and quasiconformal mappings. After a brief introduction to these concepts\, we will discuss in some details the constructions of Apollonian metrics of order k and the transfinite Apollonian metric. Time permitting\, we will discuss several properties\, connections to other hyperbolic-type metrics\, and some open problems.
URL:https://colleges.claremont.edu/ccms/event/analysis-seminar-transfinite-apollonian-metric-zair-ibragimov-csu-fullerton/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Analysis Seminar
ORGANIZER;CN="Asuman Aksoy":MAILTO:asuman.aksoy@claremontmckenna.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251003T110000
DTEND;TZID=America/Los_Angeles:20251003T121500
DTSTAMP:20260405T110312
CREATED:20250923T140603Z
LAST-MODIFIED:20251003T021636Z
UID:3859-1759489200-1759493700@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Ruby Kim (University of Michigan)
DESCRIPTION:CCMS Colloquium invites you to a talk by Ruby Kim (University of Michigan) \nTitle: Mathematical Models of Circadian Rhythms and Seasonal Timing\n \nAbstract: The circadian clock shapes nearly 24-hour periodic rhythms throughout the body\, from the activity of individual cells to our daily sleep/wake cycles. These rhythms can be self-sustained (for example\, people still show circadian patterns even in total darkness)\, but they are also strongly influenced by the environment\, especially light. Mathematical models of circadian rhythms have provided insight into many intriguing phenomena\, including jet lag\, mid-afternoon fatigue\, and how animals sense the changing seasons. In this talk\, I will introduce how mathematical models of circadian rhythms are constructed and used. Then\, I will share recent work on seasonal timing in a large population of medical interns\, using data collected from wearable devices. Our results suggest that seasonal timing plays a key role in how people respond to shift work. Overall\, the goal of this talk is to introduce how mathematical modeling can be used to better understand biological rhythms and their impact on daily life.\n \nBio: I am originally from Koreatown\, Los Angeles. I did my undergraduate studies at Pomona College (Class of ’17)\, where I majored in math and completed a thesis under the mentorship of Dr. Ami Radunskaya. I enjoyed teaching mathematics and doing research\, so I decided to pursue graduate studies in math at Duke University. During my PhD\, I fell in love with biological rhythms and mathematical neuroscience. Currently\, I am a postdoc at the University of Michigan using mathematical modeling and data science to study biology and health. During my free time\, I enjoy playing pool\, hanging out with my dog\, and reading.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-ruby-kim-university-of-michigan/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251004T100000
DTEND;TZID=America/Los_Angeles:20251004T115500
DTSTAMP:20260405T110312
CREATED:20250911T185952Z
LAST-MODIFIED:20250922T183437Z
UID:3824-1759572000-1759578900@colleges.claremont.edu
SUMMARY:GEMS October 4th Session
DESCRIPTION:This GEMS session will be facilitated by Professor Chiu-Yen Kao from Claremont McKenna College.\n\n\nTitle: Finding Your Optimal Paths\n\nAbstract: Path planning plays an important role in many aspects of our daily life\, among which are transportation\, robotics\, and optics. In this session\, we will explore the mathematics behind path planning including the Dijkstra’s algorithm for finding the shortest paths between nodes in a graph and Fermat’s principle on the least time path taken between two points by a ray of light. Students will get hands-on experience on building a graph network on a real map and study different path planning problems. To inspire students to explore more advanced topics\, some complicated path planning questions in high dimensions will be discussed at the end.
URL:https://colleges.claremont.edu/ccms/event/gems-october-4th-session/
LOCATION:Shanahan B450\, Harvey Mudd College\, 301 Platt Blvd.\, Claremont\, 91711\, United States
CATEGORIES:GEMS
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251006T161500
DTEND;TZID=America/Los_Angeles:20251006T171500
DTSTAMP:20260405T110312
CREATED:20251006T190122Z
LAST-MODIFIED:20251006T190122Z
UID:3881-1759767300-1759770900@colleges.claremont.edu
SUMMARY:Modeling drug release for in vitro experiments (Minaya Villasana De Armas\, Universidad Simon Bolivar)
DESCRIPTION:Abstract: It is common to use adjuvants in immunotherapeutic regimens to strengthen the immune response. However\, multiple dosages are required making it inconvenient for the patient. Hydrogels have been proposed as a vehicle to administer adjuvant and antigen in a sustained slow release thus reducing the need for re-administration. \nIn this instance\, we use experimental data for stability studies on two different thermosensitive pentablock hydrogels as well as release of three adjuvants suspended in the hydrogels or in PLGA nanoparticles. The goal is to model this release and provide a framework by which these models can describe the various release profiles efficiently. \n 
URL:https://colleges.claremont.edu/ccms/event/modeling-drug-release-for-in-vitro-experiments-minaya-villasana-de-armas-universidad-simon-bolivar/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Ryan Aschoff":MAILTO:ryan.aschoff@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251007T121500
DTEND;TZID=America/Los_Angeles:20251007T131000
DTSTAMP:20260405T110312
CREATED:20250828T190015Z
LAST-MODIFIED:20250927T183316Z
UID:3800-1759839300-1759842600@colleges.claremont.edu
SUMMARY:The integer point transform as a complete invariant (Sinai Robins\, University of São Paulo\, Brazil)
DESCRIPTION:Given any finite set of integer points S\, there is an associated function f_S that encodes S\, which we call its integer point transform.   One can think of this integer point transform f_S algebraically or analytically.  Here we focus on its analytic properties\, showing that it is a complete invariant.   In fact\, we prove that it is only necessary to evaluate f_S at one algebraic point in order to uniquely determine the finite set S\, by employing the Lindemann-Weierstrass theorem.    Similarly\, we prove that it’s only necessary to evaluate the Fourier transform of a rational polytope P (as well as rational cones) at a single algebraic point\, in order to uniquely determine S.   Finally\, by relating the integer point transform to finite Fourier transforms\, we show that a finite number of integer point evaluations of f_S suffice in order to uniquely determine S.  
URL:https://colleges.claremont.edu/ccms/event/antc-talk-sinai-robins-university-of-sao-paulo-brazil/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251010T110000
DTEND;TZID=America/Los_Angeles:20251010T121500
DTSTAMP:20260405T110312
CREATED:20250923T140917Z
LAST-MODIFIED:20251008T232409Z
UID:3860-1760094000-1760098500@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Sinai Robins (University of São Paulo - Brazil)
DESCRIPTION:CCMS Colloquium invites you to a talk by Sinai Robins (University of São Paulo – Brazil)\n\n \nTitle: An introduction to the geometry of numbers through the lens of analysis\n \n\nAbstract: We introduce the geometry of numbers\, beginning from the first principles\, and proceeding to modern research topics in the field. Our point of view includes Fourier analysis on compact sets and in particular on convex bodies. We give some recent extensions of previous results by C. L. Siegel\, and E. Bombieri\, both of whom extended Minkowski’s first theorem for convex\, centrally symmetric bodies. \nA discrete version of these results allows us to give some new formulations for finite sums of discrete covariograms\, for any finite set of integer points in Euclidean space. We’ll give visual examples\, with pictures\, of everything in dimension 2. On the other hand\, a continuous application of these results allows us to shed additional light on the enumeration of lattice points in polytopes in R^d\, and in particular some Ehrhart-type theory. This is joint work with Michel Faleiros. \n\n \nBio: Professor Sinai Robins completed his Ph.D. in Number Theory at UCLA. He has held tenured positions at Temple University and Nanyang Technological University and is currently a full professor at the University of São Paulo\, Brasil. Professor Robins enjoys tackling problems in Discrete Geometry\, Fourier Analysis\, Number Theory\, Combinatorial Optimization\, and Data Science. Some of his recent research is reflected in his new 2024 book\, called Fourier analysis on polytopes and the geometry of numbers: Part I\, a gentle introduction. This book offers a unique\, modern\, Fourier-analytic perspective on the geometry of numbers. It explores the relationship between geometric properties of a polytope and its Fourier transform\, provides new streamlined proofs of fundamental results\, and invites undergraduates to explore these important ideas.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-sinai-robins-university-of-sao-paulo-brazil/
LOCATION:Davidson Lecture Hall\, CMC\, 340 E 9th St\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251017T110000
DTEND;TZID=America/Los_Angeles:20251017T121500
DTSTAMP:20260405T110312
CREATED:20250923T142244Z
LAST-MODIFIED:20251015T215610Z
UID:3867-1760698800-1760703300@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Fall break Panel
DESCRIPTION:Please join us for a career discussion with three great panelists: \nSireesh Vinnakota – Graduate Student at UCI \nLuke Trujillo – Senior Software Engineer at Operant AI \nMichelle Goodwin – Trader at Allspring Global Investments \n  \nThis will be a virtual meeting only. \nZoom link: https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcmc-its.zoom.us%2Fj%2F83719659422&data=05%7C02%7Cluisa.gianuca%40cgu.edu%7C46994ae71bc5453cc6a908de0a886a47%7C19afb2c85efd4718a107530ed963d11e%7C0%7C0%7C638959778224324835%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=8pRyjqWBxWliFUf5ciI8doXyCYTzyIJ9NSrX6obEMwA%3D&reserved=0 \nMeeting ID: 837 1965 9422
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-fall-break-panel/
LOCATION:CA
CATEGORIES:Colloquium
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251020T161500
DTEND;TZID=America/Los_Angeles:20251020T171500
DTSTAMP:20260405T110312
CREATED:20250829T230854Z
LAST-MODIFIED:20250902T231226Z
UID:3805-1760976900-1760980500@colleges.claremont.edu
SUMMARY:Some New Advances in Similarity-Based Predictive Modeling (Joel A. Dubin\, University of Waterloo)
DESCRIPTION:Abstract: Earlier work has shown that similarity-based predictive models can improve upon predictive performance\, as compared to using the entire training data to help build models\, particular regarding model discrimination for binary responses. My collaborators and I have some updated results to share\, regarding similarity-based modeling for joint consideration of model calibration and discrimination\, as well as for dynamic prediction models. Properties of our methods will be investigated in comprehensive simulation studies\, and we will demonstrate the methods through separate analyses of a publicly-available intensive care unit (ICU) database.
URL:https://colleges.claremont.edu/ccms/event/some-new-advances-in-similarity-based-predictive-modeling-joel-a-dubin-university-of-waterloo/
LOCATION:Emmy Noether Room\, Estella 1021\, Pomona College\,\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Applied Math Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251021T121500
DTEND;TZID=America/Los_Angeles:20251021T131000
DTSTAMP:20260405T110312
CREATED:20250807T222137Z
LAST-MODIFIED:20251007T213217Z
UID:3777-1761048900-1761052200@colleges.claremont.edu
SUMMARY:Singularities in characteristic p and the Riemann–Hilbert correspondence (Robert Cass\, CMC)
DESCRIPTION:The Riemann–Hilbert correspondence relates algebra to differential equations on complex algebraic varieties. In characteristic p\, there is an analogous correspondence due to Emerton–Kisin and later generalized by Bhatt–Lurie\, where the derivative operator is replaced by the p-th power Frobenius operator. In this talk we will explain a relation between the mod p Riemann–Hilbert correspondence and the study of singularities of algebraic varieties in characteristic p. This talk is mostly about commutative algebra\, and we will introduce concepts such as local cohomology and perverse sheaves along the way. This is joint work with João Lourenço.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-robert-cass-cmc/
LOCATION:Estella 2099
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251021T160000
DTEND;TZID=America/Los_Angeles:20251021T170000
DTSTAMP:20260405T110312
CREATED:20250910T222206Z
LAST-MODIFIED:20251001T223838Z
UID:3826-1761062400-1761066000@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Puttipong Pongtanapaisan (Pitzer College)
DESCRIPTION:We welcome all undergraduate/graduate students and faculty to attend topology seminar! \nSpeaker: Puttipong Pongtanapaisan (Pitzer College) \nTitle: Special Positions of Shapes in Four-Dimensional Space \nAbstract: I will begin by convincing you that four-dimensional space is more familiar than it might first appear. Then\, I will introduce ways in which mathematicians study objects in 4-space. Each visualization method comes with its own advantages and limitations\, as well as a natural measure of complexity that captures how “knotted” a shape can be. Drawing from my work on several projects\, I will explain how these complexity measures connect to other areas of mathematics. For example\, placing surfaces in what we call a rainbow position reveals connections to symplectic geometry.
URL:https://colleges.claremont.edu/ccms/event/puttipong-pongtanapaisan-pitzer-college/
LOCATION:Fletcher 104\, Pitzer College\, 1050 N Mills Ave\, Claremont\, 91711\, United States
CATEGORIES:Topology Seminar
END:VEVENT
END:VCALENDAR