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DTSTART;TZID=America/Los_Angeles:20260903T160000
DTEND;TZID=America/Los_Angeles:20260903T170000
DTSTAMP:20260827T235836Z
CREATED:20260827T215746Z
LAST-MODIFIED:20260827T235836Z
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SUMMARY:Number Theory Learning Seminar (Organizational Meeting)
DESCRIPTION:An organizational meeting for this semester’s “Number Theory Learning Seminar will take place on Thursday September 3 at 4:00 PM in CGU’s Burkle Hall\, Room 24. \nThe Seminar is geared for graduate students\, undergraduates\, and faculty to learn about topics in number theory which are not typically covered in traditional classes. The volunteers will take turns presenting one preselected paper within the allocated 60 minutes. These papers are relatively short — averaging less than 10 pages in length — and cover some results known mainly to researchers in the field\, such as Newman’s proof of the Prime Number Theorem\, Bhargava’s proof of the 15 Theorem\, and Elkies’s counterexample to a conjecture of Euler. Prior knowledge of number theory is not required to understand the topics we will discuss. Seminar attendees are not required to participate in presentations\, but all are encouraged. \nThe regular weekly meeting time will be determined at the organizational meeting. For more information\, contact Maxwell Kooiker (maxwell.kooiker@cgu.edu) or Edray Goins (edray.goins@pomona.edu).
URL:https://colleges.claremont.edu/ccms/event/number-theory-learning-seminar-organizational-meeting/
LOCATION:Burkle 24\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260905T100000
DTEND;TZID=America/Los_Angeles:20260905T115500
DTSTAMP:20260829T044019Z
CREATED:20260813T212431Z
LAST-MODIFIED:20260829T044019Z
UID:10002217-1788602400-1788609300@colleges.claremont.edu
SUMMARY:GEMS September 5th Session
DESCRIPTION:This GEMS session will be facilitated by Professor Qidi Peng and William Wu from Claremont Graduate University.\n\n\nTitle: How to create a die if you only have a coin?\n\nAbstract: Imagine you have no dice but only coins\, how do you play a monopoly game? This lesson introduces a number of mysterious methods to simulate all probabilities only by flipping a coin. Throughout the session we will also show the beauty of randomness by introducing random number\, probability distribution\, simulator\, and practical algorithms for simulation.
URL:https://colleges.claremont.edu/ccms/event/gems-september-5th-session/
LOCATION:Shanahan 3481\, Harvey Mudd College\, 320 E. Foothill Blvd.\, Claremont\, CA\, 91711-3941\, United States
CATEGORIES:GEMS
ORGANIZER;CN="Teal Witter":MAILTO:raylen.witter@claremontmckenna.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260908T121500
DTEND;TZID=America/Los_Angeles:20260908T131000
DTSTAMP:20260821T073419Z
CREATED:20260417T223051Z
LAST-MODIFIED:20260821T073419Z
UID:10001800-1788869700-1788873000@colleges.claremont.edu
SUMMARY:Field extensions built from dynamical systems\, ramification\, and Julia sets (Michelle Manes\, American Institute of Mathematics)
DESCRIPTION:Given a polynomial defined over a field $K$\, you can build an extension of $K_\infty / K$ by adjoining inverse images of some point $\alpha \in K$. The behavior of these extensions (including the degree [K_\infty : K]\, ramification\, and associated Galois representations) are surprisingly different in the cases that $K$ is a number field versus a local field. In this talk\, I’ll describe the development of these ideas over the past almost 20 years\, culminating in some ongoing work that pushes our understanding of the local field case even further and connects these ideas to the (Berkovich) Julia set for the polynomials.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-michelle-manes-american-institute-of-mathematics/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260909T161500
DTEND;TZID=America/Los_Angeles:20260909T173000
DTSTAMP:20260903T024403Z
CREATED:20260902T221601Z
LAST-MODIFIED:20260903T024403Z
UID:10002238-1788970500-1788975000@colleges.claremont.edu
SUMMARY:Fall 2026 Research Poster Session
DESCRIPTION:This poster session is meant to showcase undergraduate and graduate work in the mathematical sciences\, broadly interpreted\, in a supportive environment. \nThe poster session will take place at Claremont Graduate University at The Drucker Institute\, 1021 N Dartmouth Ave from 4:15pm – 5:30pm\, on Wednesday September 9th\, 2026. \n  \nRefreshments will be provided! For any questions about the event\, please contact your CCMS Colloquium chairs: \nProf. Robert Cass (Robert.Cass@ClaremontMcKenna.edu) or Prof. Qidi Peng (Qidi.Peng@cgu.edu)
URL:https://colleges.claremont.edu/ccms/event/fall-2026-research-poster-session/
LOCATION:The Drucker Institute\, 1021 N. Dartmouth Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium,Special Event
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260910T161500
DTEND;TZID=America/Los_Angeles:20260910T173000
DTSTAMP:20260911T015128Z
CREATED:20260911T014659Z
LAST-MODIFIED:20260911T015128Z
UID:10002257-1789056900-1789061400@colleges.claremont.edu
SUMMARY:NT Learning Seminar — Newman's Proof of the PNT (Maxwell Kooiker)
DESCRIPTION:We showcase Newman’s proof of the Prime Number Theorem\, published by Don Zagier. Link: https://www.jstor.org/stable/2975232 \n\n\n\nFor questions about the event\, please contact your NTLS Organizers: \nMaxwell Kooiker (Maxwell.Kooiker@cgu.edu) or Prof. Edray Goins (Edray.Goins@pomona.edu)
URL:https://colleges.claremont.edu/ccms/event/nt-learning-seminar-newmans-proof-of-the-pnt-maxwell-kooiker/
LOCATION:Burkle 12\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
ORGANIZER;CN="Maxwell Kooiker":MAILTO:maxwell.kooiker@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260914T161500
DTEND;TZID=America/Los_Angeles:20260914T171500
DTSTAMP:20260910T052954Z
CREATED:20260910T052954Z
LAST-MODIFIED:20260910T052954Z
UID:10002252-1789402500-1789406100@colleges.claremont.edu
SUMMARY:Adaptive Experimental Design using Shrinkage Estimators (Evan Rosenman\, Claremont McKenna College)
DESCRIPTION:In multi-armed trials\, adaptive designs are a popular way to increase estimation efficiency or identify optimal treatments. Many recent papers have proposed adaptive methods for minimizing the error of unbiased estimators that consider each treatment arm in isolation. This approach may be inefficient\, because it fails to borrow shared information across the treatment arms.\nWe consider adaptivity in a sequential trial with K active treatments and a control\, and suggest the use of Stein-like shrinkage estimators to obtain the final causal estimates. These estimators share information\, yielding reductions in expected estimation error\, relative to estimating each causal effect in isolation. Moreover\, for a group of candidate estimators\, the expected error can be expressed as the expectation of ratios of Gaussian quadratic forms\, and can thus be computed efficiently. Hence\, we suggest a simple algorithm for sequential adaptivity: assign each new arrival to the arm that will minimize the estimated shrinker loss.\nThrough simulations\, we demonstrate that this approach reduces estimation error\, especially in the low signal-to-noise regime. We also characterize how our adaptive algorithm assigns treatments differently than would a classical Neyman allocation and suggest a method for constructing shorter confidence intervals at the conclusion of the trial.
URL:https://colleges.claremont.edu/ccms/event/adaptive-experimental-design-using-shrinkage-estimators-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="Ami Radunskaya":MAILTO:aradunskaya@pomona.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260915T121500
DTEND;TZID=America/Los_Angeles:20260915T131000
DTSTAMP:20260907T173603Z
CREATED:20260830T212148Z
LAST-MODIFIED:20260907T173603Z
UID:10002233-1789474500-1789477800@colleges.claremont.edu
SUMMARY:Kloosterman sums and Bessel functions (Robert Cass\, CMC)
DESCRIPTION:Kloosterman sums are explicit exponential sums which occur in several contexts in number theory and arithmetic geometry. Bessel functions encode a great deal of representation-theoretic information about finite groups of Lie type\, but they are difficult to compute in general. In this talk\, we will carefully define these objects and describe a direct relationship between them. One of our main goals is to provide many explicit examples\, including ones for the exceptional groups E6 and E7.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-robert-cass-cmc-3/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260916T161500
DTEND;TZID=America/Los_Angeles:20260916T171500
DTSTAMP:20260913T213353Z
CREATED:20260913T213353Z
LAST-MODIFIED:20260913T213353Z
UID:10002328-1789575300-1789578900@colleges.claremont.edu
SUMMARY:Edge Ideals via Independence Polynomials of Graphs — Dalena Vien (Bryn Mawr)
DESCRIPTION:Abstract: Edge ideals of graphs provide a fertile ground for uncovering combinatorial expressions for algebraic invariants of squarefree monomial ideals. Many algebraic invariants of these edge ideals directly reflect combinatorial properties of their underlying graphs. In this talk\, I will discuss how the independence polynomial \(P_G(x)\)\, the generating function for independent sets of a graph \(G\)\, encodes surprisingly rich information about the Hilbert series of the corresponding edge ideal \(I(G)\). In particular\, I will explain how \(P_G(x)\) determines both the top coefficient and degree of the \(h\)-polynomial. I will then demonstrate the results through familiar examples and a simple suspension construction that lets us track these invariants cleanly. \n\n\n\nFor questions about the event\, please contact your CCMS Colloquium chairs: \nProf. Robert Cass (Robert.Cass@ClaremontMcKenna.edu) or Prof. Qidi Peng (Qidi.Peng@cgu.edu) \nFor logistical questions\, contact Maxwell Kooiker (Maxwell.Kooiker@cgu.edu)\, the CCMS Colloquium Assistant.
URL:https://colleges.claremont.edu/ccms/event/edge-ideals-via-independence-polynomials-of-graphs-dalena-vien-bryn-mawr/
LOCATION:Burkle 16\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260917T161500
DTEND;TZID=America/Los_Angeles:20260917T173000
DTSTAMP:20260911T195823Z
CREATED:20260911T191628Z
LAST-MODIFIED:20260911T195823Z
UID:10002259-1789661700-1789666200@colleges.claremont.edu
SUMMARY:NT Learning Seminar — Diophantine Rep. of the Set ℙ (TBA)
DESCRIPTION:We showcase Diophantine Representation of the Set of Prime Numbers by Jones\, Sato\, Wada and Wiens. Link: https://www.jstor.org/stable/2318339 \n\n\n\nFor questions about the event\, please contact your NTLS Organizers: \nMaxwell Kooiker (Maxwell.Kooiker@cgu.edu) or Prof. Edray Goins (Edray.Goins@pomona.edu)
URL:https://colleges.claremont.edu/ccms/event/ntls-2/
LOCATION:CA
CATEGORIES:Special Event
ORGANIZER;CN="Maxwell Kooiker":MAILTO:maxwell.kooiker@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260921T161500
DTEND;TZID=America/Los_Angeles:20260921T171500
DTSTAMP:20260913T231319Z
CREATED:20260913T231319Z
LAST-MODIFIED:20260913T231319Z
UID:10002329-1790007300-1790010900@colleges.claremont.edu
SUMMARY:Number Theory meets Differential Equations: Using Homotopy Continuation to Compute Shabat Polynomials
DESCRIPTION:A Belyĭ pair \(\bigl( S\,\\, z(w) \bigr)\) is a compact\, connected Riemann surface \(S\) together with a rational function \(z \colon S \to \mathbb{P}^1(\mathbb{C})\) which has at most three critical values \(\bigl\{ 0\,\\, 1\,\\, \infty \bigr\}\). The preimage \(z^{-1}\bigl( [0\,1] \bigr) \subseteq S \hookrightarrow \mathbb{R}^3\) is a bipartite graph called a Dessin d’Enfant. When \(S = \mathbb{P}^1(\mathbb{C}) \simeq S^2(\mathbb{R})\) is the Riemann sphere\, a tree—namely\, a planar graph with one face—can be realized as the Dessin d’Enfant of a polynomial. Named in honor of Georgii Borisovich Shabat\, a Belyĭ map \(z \colon S \to \mathbb{P}^1(\mathbb{C})\) which is also a polynomial is called a Shabat polynomial. \nIn this project\, we seek to compute more examples of Shabat polynomials. We introduce a trick which reduces the computation of such polynomials to finding solutions to a system of polynomial equations. We explore computing these solutions via two methods: (1) Newton’s method\, to find approximate values\, and (2) the homotopy continuation method\, to deform known solutions into desired yet unknown ones. Simply put\, in this talk we give an introduction to using differential equations to answer questions in number theory. \nThis project was completed through the Research Experience for Undergraduate Faculty (REUF) at AIM/ICERM in Summers 2025 and 2026 (DMS‑2015462).
URL:https://colleges.claremont.edu/ccms/event/number-theory-meets-differential-equations-using-homotopy-continuation-to-compute-shabat-polynomials/
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:20260922T121500
DTEND;TZID=America/Los_Angeles:20260922T131000
DTSTAMP:20260917T215711Z
CREATED:20260917T215711Z
LAST-MODIFIED:20260917T215711Z
UID:10002333-1790079300-1790082600@colleges.claremont.edu
SUMMARY:Hilbert basis for conical semigroups and indecomposable elements (Lenny Fukshansky\, CMC)
DESCRIPTION:The unique minimal generating set for a semigroup of lattice points in an n-dimensional polyhedral cone is called its Hilbert basis. In the case when the cone is spanned by lattice points\, this Hilbert basis is finite\, however its cardinality can be much larger than n. Nevertheless\, a conjecture of Sebö states that each point in this semigroup can be spanned by no more than n elements of the Hilbert basis. We will brief discuss this conjecture and its current status\, and then shift to the situation where the cone in question is the positive orthant in R^n. In this case the Hilbert basis consists of the so-called indecomposable elements\, notation coming from the theory of universal quadratic forms over algebraic number fields. We will classify lattices that have finite versus infinite Hilbert basis of indecomposables. We will then discuss an analogue of Sebö’s conjecture for indecomposables in planar lattices and finish by presenting a counting estimate on the number of indecomposables of bounded norm in this 2-dimensional case. Joint work with Filiana Kostopoulou.
URL:https://colleges.claremont.edu/ccms/event/hilbert-basis-for-conical-semigroups-and-indecomposable-elements-lenny-fukshansky-cmc/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260922T161500
DTEND;TZID=America/Los_Angeles:20260922T171500
DTSTAMP:20260916T004846Z
CREATED:20260916T004846Z
LAST-MODIFIED:20260916T004846Z
UID:10002332-1790093700-1790097300@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Sam Nelson (CMC)
DESCRIPTION:Speaker: Sam Nelson (CMC) \nTitle: Permutation Jones Polynomials \nAbstract: The Jones Polynomial is an important invariant of knots with applications in physics\, quantum computation and more. In this talk I will introduce a family of generalizations of the Jones polynomial associated to permutations of finite sets and discuss their properties. \n_______ \nWe especially welcome all undergraduates and graduate students to attend topology seminar! \nThe Seminar Room Information will be added soon.
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-sam-nelson-cmc-2/
LOCATION:CA
CATEGORIES:Topology Seminar
ORGANIZER;CN="Bahar Acu":MAILTO:Bahar_Acu@pitzer.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260923T161500
DTEND;TZID=America/Los_Angeles:20260923T171500
DTSTAMP:20260921T164909Z
CREATED:20260921T164635Z
LAST-MODIFIED:20260921T164909Z
UID:10002336-1790180100-1790183700@colleges.claremont.edu
SUMMARY:CCMS Colloquium: The Stochastic Logistic Map: Theory and Applications — Kimberly Ayers (CSU San Marcos)
DESCRIPTION:Flyer for Kim’s talk. \nAbstract: The logistic map is one of the most famous examples in dynamical systems. Originally introduced as a simple model of population growth\, it exhibits a surprisingly rich range of behavior: as a single parameter varies\, stable equilibria give way to periodic orbits and eventually to chaos. But in real populations\, quantities such as reproductive and death rates are unlikely to remain constant over time. What happens when we allow this parameter to vary randomly from one generation to the next? \nIn this talk\, we explore a stochastic version of the logistic map in which the parameter is chosen randomly at each iteration. Introducing randomness changes the questions we ask: rather than studying individual fixed points or periodic orbits\, we investigate probability distributions that describe the long-term behavior of the system. We will see how tools from dynamical systems and Markov processes can be used to show that\, under appropriate conditions\, the stochastic system settles into a unique long-term statistical behavior that is independent of its initial state. We conclude with simulations illustrating this invariant distribution and discuss several questions about how the system’s behavior changes as the amount and type of randomness vary. \n\n\n\nFor questions about the event\, please contact your CCMS Colloquium chairs: \nProf. Robert Cass (Robert.Cass@ClaremontMcKenna.edu) or Prof. Qidi Peng (Qidi.Peng@cgu.edu) \nFor logistical questions\, contact Maxwell Kooiker (Maxwell.Kooiker@cgu.edu)\, the CCMS Colloquium Assistant.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-the-stochastic-logistic-map-theory-and-applications-kimberly-ayers-csu-san-marcos/
LOCATION:Burkle 16\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260928T161500
DTEND;TZID=America/Los_Angeles:20260928T171500
DTSTAMP:20260913T232258Z
CREATED:20260913T232258Z
LAST-MODIFIED:20260913T232258Z
UID:10002330-1790612100-1790615700@colleges.claremont.edu
SUMMARY:Brain Imaging and Mathematical Modeling of Alzheimer's Disease (Peter Hinow\, U. Wisconsin\, Milwaukee)
DESCRIPTION:A wide variety of medical imaging methods exist for research and diagnostic procedures on the Central Nervous System (CNS)\, among them Magnetic Resonance Imaging (MRI) and Optical Imaging. Mathematical modeling and simulation contribute significantly to an improved understanding of image data and the intricate transport\, diffusion\, and metabolic processes in the brain. This is of particular importance in the study of pathologies such as Alzheimer’s Disease\, which\, 125 years after its description\, remains poorly understood and for which only moderate success has been made in its treatment. In the first work to be presented\, we investigate tracer diffusion and transport in the glymphatic system by combining optical imaging in rats with a partial differential equation of reaction-advection-diffusion type. In a second work\, we collect observations on the accumulation of amyloid-β\, changes in neuronal density\, and a decline in cognitive performance in TgF344-AD and wild-type rats. We develop a compartmental ordinary differential equation model and determine its parameters by fitting the output to the experimental observations. In the long run\, our mathematical modeling effort is intended to bridge AD research in rodent models and the human condition of AD. This is joint work with Dr. Muna Aryal (North Carolina Agricultural and Technical State University) and Micah Hesketh\, MS (graduate student\, UWM).
URL:https://colleges.claremont.edu/ccms/event/brain-imaging-and-mathematical-modeling-of-alzheimers-disease-peter-hinow-u-wisconsin-milwaukee-2/
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:20260929T121500
DTEND;TZID=America/Los_Angeles:20260929T131000
DTSTAMP:20260916T004741Z
CREATED:20260916T004741Z
LAST-MODIFIED:20260916T004741Z
UID:10002331-1790684100-1790687400@colleges.claremont.edu
SUMMARY:From the basics of extremal graph theory to bipartite Turan numbers of trees and star forests (Omid Khormali\, HMC)
DESCRIPTION:Extremal graph theory asks how many edges a graph can have while avoiding a given substructure. We will begin with a brief\, accessible introduction to this area\, before turning to a natural variant\, the bipartite Turan number $(m\,n;H)$\, which restricts the host graph to be bipartite. This setting is especially natural when $H$ itself is bipartite\, such as a tree or star forest. We present new results determining the leading-order bipartite Turan number for trees and the exact bipartite Turan number for star forests\, along with a sketch of the key proof ideas.
URL:https://colleges.claremont.edu/ccms/event/from-the-basics-of-extremal-graph-theory-to-bipartite-turan-numbers-of-trees-and-star-forests-omid-khormali-hmc/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260929T161500
DTEND;TZID=America/Los_Angeles:20260929T171500
DTSTAMP:20261002T220011Z
CREATED:20261002T215939Z
LAST-MODIFIED:20261002T220011Z
UID:10002354-1790698500-1790702100@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Helen Wong (CMC)
DESCRIPTION:Speaker: Helen Wong (CMC) \nTitle: Introduction to the colored Jones polynomial\n \nAbstract: This is a learning seminar. We will present an accessible definition of the colored Jones polynomial for knots and links and discuss the Volume Conjecture\, which relates the colored Jones polynomial of K with the volume of its complement S^3 \K. \n_______ \nWe especially welcome all undergraduates and graduate students to attend topology seminar! \nRoom: Roberts South 103
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-helen-wong-cmc/
LOCATION:Roberts South 103\, Roberts Hall South 103\, Claremont McKenna College\, E 8th St\, 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:20260930T161500
DTEND;TZID=America/Los_Angeles:20260930T171500
DTSTAMP:20260922T024752Z
CREATED:20260922T024752Z
LAST-MODIFIED:20260922T024752Z
UID:10002337-1790784900-1790788500@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Stable Khovanov Homology for Torus Links — Christine Lee (Texas State University)
DESCRIPTION:Abstract: Stable Khovanov homology \(Kh(T(n\, \infty))\) is an algebraic limit of the Khovanov homology groups of torus links \(T(n\, k) \) on a fixed number of strands \(n\)\, when more and more full twists are added as \(k \to \infty\). Stable Khovanov homology is intimately related to the Jones polynomial because it categorifies the Jones-Wenzl projector\, which can be used to define the colored Jones polynomial. \nWe still do not completely understand \(Kh(T(n\, \infty))\). The Gorsky-Oblomkov-Rasmussen conjecture predicts a simple form of the complex for which the explicit forms of the differentials are still open. I will talk about my summer research project with a group of undergraduate students where we use a process called “whittling” to compute explicit forms of the differentials for 3- and 4-stranded torus braids. We expect our results will serve as the base case for an induction proof of the GOR conjecture. \nBesides the discussion on providing meaningful research experience for undergraduate students\, the computational aspects of the project may be of interest to the audience. The students were organized into a “math” team and a “computer” team to encourage interaction of these perspectives in pursuit of a common goal. \n\n\n\nFor questions about the event\, please contact your CCMS Colloquium chairs: \nProf. Robert Cass (Robert.Cass@ClaremontMcKenna.edu) or Prof. Qidi Peng (Qidi.Peng@cgu.edu) \nFor logistical questions\, contact Maxwell Kooiker (Maxwell.Kooiker@cgu.edu)\, the CCMS Colloquium Assistant.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-stable-khovanov-homology-for-torus-links-christine-lee-texas-state-university/
LOCATION:Burkle 16\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261001T161500
DTEND;TZID=America/Los_Angeles:20261001T173000
DTSTAMP:20261001T184216Z
CREATED:20261001T184216Z
LAST-MODIFIED:20261001T184216Z
UID:10002352-1790871300-1790875800@colleges.claremont.edu
SUMMARY:CANCELLED: NT Learning Seminar — Functions Representing Primes (Joy Shin)
DESCRIPTION:We showcase Functions Which Represent Prime Numbers. Presented by Joy Shin. Link: https://www.jstor.org/stable/2032078 \n\n\n\nFor questions about the event\, please contact your NTLS Organizers: \nMaxwell Kooiker (Maxwell.Kooiker@cgu.edu) or Prof. Edray Goins (Edray.Goins@pomona.edu)
URL:https://colleges.claremont.edu/ccms/event/cancelled-nt-learning-seminar-functions-representing-primes-joy-shin/
LOCATION:Burkle 12\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
ORGANIZER;CN="Maxwell Kooiker":MAILTO:maxwell.kooiker@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261003T100000
DTEND;TZID=America/Los_Angeles:20261003T115500
DTSTAMP:20260918T060138Z
CREATED:20260918T060138Z
LAST-MODIFIED:20260918T060138Z
UID:10002334-1791021600-1791028500@colleges.claremont.edu
SUMMARY:GEMS October 3rd Session
DESCRIPTION:This GEMS session will be facilitated by Professor Chiu-Yen Kao from Claremont McKenna College. \nTitle: The Magic of 0s and 1s\n\nAbstract: Have you ever wondered how data in a computer is stored? In this talk\, we’ll crack open the binary numeral system\, the simple code of 0s and 1s that represents everything on your screen\, from text and audio to images and video. Through hands-on group activities (including encoding your own name in binary!)\, you’ll get to experience the magic of 0s and 1s for yourself. No background needed\, just curiosity!
URL:https://colleges.claremont.edu/ccms/event/gems-october-3rd-session/
LOCATION:Shanahan 3481\, Harvey Mudd College\, 320 E. Foothill Blvd.\, Claremont\, CA\, 91711-3941\, United States
CATEGORIES:GEMS
ORGANIZER;CN="Teal Witter":MAILTO:raylen.witter@claremontmckenna.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261005T161500
DTEND;TZID=America/Los_Angeles:20261005T171500
DTSTAMP:20260910T053858Z
CREATED:20260910T053858Z
LAST-MODIFIED:20260910T053858Z
UID:10002255-1791216900-1791220500@colleges.claremont.edu
SUMMARY:If a Statistical Model Predicts That Common Events Should Occur Only Once in 10\,000 Elections\, Maybe it’s the Wrong Model (Danny Ebanks\, Cal Tech)
DESCRIPTION:Political scientists forecast elections\, not primarily to satisfy public interest\, but to validate statistical models used for estimating quantities of scholarly interest. Although scholars have learned a great deal from these models\, they can be embarrassingly overconfident: Events that should occur once in 10\,000 elections occur almost every year\, and even those that should occur once in a five-quadrillion elections are sometimes observed. We develop the first generative statistical model of all US federal legislative elections for the U.S. House (1946–2024) and Senate (1954–2024) and validate it with extensive out-of-sample tests. We find that even as the incumbency advantage rises and falls\, voting patterns nationalize\, and heresthetic maneuvering remake candidacies and campaigns\, the fundamental quantities of interest related to American legislative elections remain constant over eighty years\, including but not limited to the probability of incumbent defeat\, the magnitude and dispersion of candidate effects\, the midterm penalty\, and the partisan bias of electoral maps. Most striking\, we show that the same set of structural parameters describes both U.S. House and Senate elections\, implying a universal data-generation process for American legislative elections in the postwar era.
URL:https://colleges.claremont.edu/ccms/event/if-a-statistical-model-predicts-that-common-events-should-occur-only-once-in-10000-elections-maybe-its-the-wrong-model-danny-ebanks-cal-tech/
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:20261006T121500
DTEND;TZID=America/Los_Angeles:20261006T131000
DTSTAMP:20260903T162807Z
CREATED:20260903T162807Z
LAST-MODIFIED:20260903T162807Z
UID:10002249-1791288900-1791292200@colleges.claremont.edu
SUMMARY:Permutation Jones Polynomials (Sam Nelson\, CMC)
DESCRIPTION:The Jones Polynomial is an important invariant of knots with applications in physics\, quantum computation and more. In this talk I will introduce a family of generalizations of the Jones polynomial associated to permutations of finite sets and discuss their properties.
URL:https://colleges.claremont.edu/ccms/event/permutation-jones-polynomials-sam-nelson-cmc/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261006T161500
DTEND;TZID=America/Los_Angeles:20261006T171500
DTSTAMP:20261002T220229Z
CREATED:20261002T220229Z
LAST-MODIFIED:20261002T220229Z
UID:10002355-1791303300-1791306900@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Puttipong Pongtanapaisan (Pitzer College)
DESCRIPTION:Speaker: Puttipong Pongtanapaisan (Pitzer) \nTitle: Introduction to Quantum Invariants of 3-Manifolds\n \nAbstract: The previous speakers showed us how to distinguish knots and links using techniques involving quantum groups. I will start by explaining briefly why 3-manifolds\, much like the universe we live in\, can actually be represented as knots and links with numbers assigned to each component. Furthermore\, diagrams of equivalent 3-manifolds differ by a sequence of moves that are highly similar to Reidemeister moves. To study 3-manifolds\, we will adapt the techniques discussed by previous speakers to come up with a quantity unchanged by these new moves. I will compute the invariant for some classic examples and draw lots of pictures. \n_______ \nWe especially welcome all undergraduates and graduate students to attend topology seminar! \nRoom: Roberts South 103
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-puttip-pitzer/
LOCATION:Roberts South 103\, Roberts Hall South 103\, Claremont McKenna College\, E 8th St\, 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:20261007T161500
DTEND;TZID=America/Los_Angeles:20261007T171500
DTSTAMP:20261001T184747Z
CREATED:20261001T184747Z
LAST-MODIFIED:20261001T184747Z
UID:10002353-1791389700-1791393300@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Distribution-Based Optimal Asset Selling — Sixian Jin (CSU San Marcos)
DESCRIPTION:Abstract: In this talk\, we study the optimal timing of selling a risky asset within the distribution builder framework. Instead of specifying a utility function or risk-aversion parameter\, this approach allows an investor to express preferences directly through a desired distribution of the selling price. Mathematically\, the problem is closely related to the Skorokhod embedding problem\, where a target distribution is attained by stopping a diffusion process. We first discuss the distribution builder problem for general one-dimensional diffusions and then extend the framework to incorporate the possibility of ruin\, which places additional restrictions on the distributions that can be attained. We characterize the set of distributions attainable before ruin and consider two related optimization problems: finding the attainable distribution closest to an unattainable target\, and improving an attainable target under first-order stochastic dominance constraints. Using an extended f-divergence framework\, we establish existence and uniqueness results\, provide analytic characterizations of the solutions\, and illustrate the approach with numerical examples. \nSixian Jin is an Assistant Professor of Mathematics at California State University San Marcos. He graduated from Claremont Graduate University in 2017 under the supervision of Prof. Henry Schellhorn. His research interests include stochastic analysis\, stochastic differential equations\, and their applications in mathematical finance. In addition to his research\, he is actively involved in undergraduate and graduate education in probability\, statistics\, and financial mathematics. He is also interested in the use of artificial intelligence in mathematics education\, particularly in exploring how AI tools can be effectively incorporated into the teaching and learning of financial mathematics and statistics. \n\n\n\nFor questions about the event\, please contact your CCMS Colloquium chairs: \nProf. Robert Cass (Robert.Cass@ClaremontMcKenna.edu) or Prof. Qidi Peng (Qidi.Peng@cgu.edu) \nFor logistical questions\, contact Maxwell Kooiker (Maxwell.Kooiker@cgu.edu)\, the CCMS Colloquium Assistant.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-distribution-based-optimal-asset-selling-sixian-jin-csu-san-marcos/
LOCATION:Burkle 16\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261008T161500
DTEND;TZID=America/Los_Angeles:20261008T173000
DTSTAMP:20261006T193222Z
CREATED:20261006T193222Z
LAST-MODIFIED:20261006T193222Z
UID:10002364-1791476100-1791480600@colleges.claremont.edu
SUMMARY:CANCELLED: NT Learning Seminar — Binary Quadratic Forms (Ethan Schlegel)
DESCRIPTION:CANCELLED: We showcase Binary Quadratic Forms. Presented by Ethan Schlegel. Link: https://mathweb.ucsd.edu/~apollack/9_305S_course_notes_binary_quadratic_forms.pdf \n\n\n\nFor questions about the event\, please contact your NTLS Organizers: \nMaxwell Kooiker (Maxwell.Kooiker@cgu.edu) or Prof. Edray Goins (Edray.Goins@pomona.edu)
URL:https://colleges.claremont.edu/ccms/event/cancelled-nt-learning-seminar-binary-quadratic-forms-ethan-schlegel/
LOCATION:Burkle 12\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
ORGANIZER;CN="Maxwell Kooiker":MAILTO:maxwell.kooiker@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261013T121500
DTEND;TZID=America/Los_Angeles:20261013T131000
DTSTAMP:20261009T145627Z
CREATED:20261009T145627Z
LAST-MODIFIED:20261009T145627Z
UID:10002366-1791893700-1791897000@colleges.claremont.edu
SUMMARY:Bertini’s theorem for F-rationality (Austyn Simpson\, Bates College)
DESCRIPTION:A classical principle in algebraic geometry is that a general hyperplane section of a variety should have singularities no worse than those of the variety itself. Over the complex numbers\, this principle is known to hold for rational singularities. Rational singularities are related via reduction mod p to a notion called F-rationality\, which is defined in terms of the Frobenius endomorphism. In this talk\, I will explore whether F-rationality is inherited by a general hyperplane section of a quasi-projective variety. I will explain why this question has a negative answer in general\, but an affirmative one provided that the variety X admits a Frobenius splitting. This is based on joint work with Alessandro De Stefani and Thomas Polstra.
URL:https://colleges.claremont.edu/ccms/event/bertinis-theorem-for-f-rationality-austyn-simpson-bates-college/
LOCATION:Estella 1021 (Emmy Noether Room)\, Pomona College\, Claremont\, CA\, 91711\, United States
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261013T161500
DTEND;TZID=America/Los_Angeles:20261013T171500
DTSTAMP:20261003T001516Z
CREATED:20261003T001516Z
LAST-MODIFIED:20261003T001516Z
UID:10002356-1791908100-1791911700@colleges.claremont.edu
SUMMARY:Claremont Topology Seminar: Jim Hoste (Pitzer College)
DESCRIPTION:Speaker: Jim Hoste (Pitzer) \nTitle: Enumerating 2-bridge knots\n \nAbstract: A new proof of an old theorem. This is joint work with Patrick D. Shanahan (Loyola Marymount University). \n_______ \nWe especially welcome all undergraduates and graduate students to attend topology seminar! \nRoom: Roberts South 103
URL:https://colleges.claremont.edu/ccms/event/claremont-topology-seminar-jim-hoste-pitzer-college-2/
LOCATION:Roberts South 103\, Roberts Hall South 103\, Claremont McKenna College\, E 8th St\, 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:20261014T161500
DTEND;TZID=America/Los_Angeles:20261014T171500
DTSTAMP:20261012T021405Z
CREATED:20261012T021405Z
LAST-MODIFIED:20261012T021405Z
UID:10002368-1791994500-1791998100@colleges.claremont.edu
SUMMARY:CCMS Colloquium: Frobenius invariants — Austyn Simpson (Bates College)
DESCRIPTION:Abstract: Rings containing a finite field \(mathbb{F}_p\) (such as the ring of polynomials with coefficients in \(mathbb{F}_p\)) admit a map called the Frobenius homomorphism which sends every element to its \(p\)-th power. This operation encodes delicate information about the geometry of the zero sets of polynomial equations in prime characteristic\, such as whether they are smooth. In this talk\, I will survey some numerical invariants defined using limits and asymptotic properties of this homomorphism which quantify how non-smooth a polynomial is. I will also discuss the current capabilities of large language models at solving problems related to these invariants\, as well as a surprising appearance of the number \(frac{4}{3}+frac{5}{14sqrt{7}}\). \n\n\n\nFor questions about the event\, please contact your CCMS Colloquium chairs: \nProf. Robert Cass (Robert.Cass@ClaremontMcKenna.edu) or Prof. Qidi Peng (Qidi.Peng@cgu.edu) \nFor logistical questions\, contact Maxwell Kooiker (Maxwell.Kooiker@cgu.edu)\, the CCMS Colloquium Assistant.
URL:https://colleges.claremont.edu/ccms/event/ccms-colloquium-frobenius-invariants-austyn-simpson-bates-college/
LOCATION:Burkle 16\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261015T161500
DTEND;TZID=America/Los_Angeles:20261015T173000
DTSTAMP:20260924T214659Z
CREATED:20260924T214602Z
LAST-MODIFIED:20260924T214659Z
UID:10002340-1792080900-1792085400@colleges.claremont.edu
SUMMARY:NT Learning Seminar — A Simple Proof of the 4-Squares Theorem (Adelia Poyarkov)
DESCRIPTION:We showcase A Simple Proof of the Four-Squares Theorem. Presented by Adelia Poyarkov. Link: https://www.jstor.org/stable/2320997. \n\n\n\nFor questions about the event\, please contact your NTLS Organizers: \nMaxwell Kooiker (Maxwell.Kooiker@cgu.edu) or Prof. Edray Goins (Edray.Goins@pomona.edu)
URL:https://colleges.claremont.edu/ccms/event/nt-learning-seminar-a-simple-proof-of-the-4-squares-theorem-adelia-poyarkov/
LOCATION:Burkle 12\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
ORGANIZER;CN="Maxwell Kooiker":MAILTO:maxwell.kooiker@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261021T161500
DTEND;TZID=America/Los_Angeles:20261021T171500
DTSTAMP:20260903T023147Z
CREATED:20260903T023110Z
LAST-MODIFIED:20260903T023147Z
UID:10002243-1792599300-1792602900@colleges.claremont.edu
SUMMARY:Fall Break Event — Graduate/Academic Panel (On Zoom)
DESCRIPTION:
URL:https://colleges.claremont.edu/ccms/event/fall-break-event-graduate-academic-panel-on-zoom/
LOCATION:On Zoom
CATEGORIES:Colloquium,Special Event
ORGANIZER;CN="Qidi Peng":MAILTO:Qidi.Peng@cgu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20261022T161500
DTEND;TZID=America/Los_Angeles:20261022T173000
DTSTAMP:20260924T215021Z
CREATED:20260924T215021Z
LAST-MODIFIED:20260924T215021Z
UID:10002341-1792685700-1792690200@colleges.claremont.edu
SUMMARY:NT Learning Seminar — On the Conway-Schneeberger 15-Theorem (Austin Dong)
DESCRIPTION:We showcase On the Conway-Schneeberger Fifteen-Theorem. Presented by Austin Dong. Link: https://webhomes.maths.ed.ac.uk/~v1ranick/books/dublin.pdf \n\n\n\nFor questions about the event\, please contact your NTLS Organizers: \nMaxwell Kooiker (Maxwell.Kooiker@cgu.edu) or Prof. Edray Goins (Edray.Goins@pomona.edu)
URL:https://colleges.claremont.edu/ccms/event/nt-learning-seminar-on-the-conway-schneeberger-15-theorem-austin-dong/
LOCATION:Burkle 12\, Claremont Graduate University\, 1021 N. Dartmouth Ave.\, Claremont\, 91711\, United States
CATEGORIES:Special Event
ORGANIZER;CN="Maxwell Kooiker":MAILTO:maxwell.kooiker@cgu.edu
END:VEVENT
END:VCALENDAR