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Between Yes and No: making decisions under uncertainty (Prof. Ami Radunskaya)

Humanities Auditorium, Scripps College, and Zoom Claremont, CA, United States

Title: Between Yes and No: making decisions under uncertainty. Speaker: Ami Radunskaya, Department of Mathematics and Statistics, Pomona College Abstract: Often we attempt to answer a question with a “yes” or a “no” by developing predictive models (“Will the small remaining population of axolotls survive outside of their native wetlands?”) or by implementing binary classifiers (“Is this […]

Applied Math Seminar: Harlin Lee (UCLA)

Shanahan 2407 at Harvey Mudd College Claremont, CA, United States

Title: Understanding scientific fields with network analysis and topic modeling Abstract: As scientific disciplines get larger, it becomes impossible for an individual researcher to be familiar with the entire body of literature, which forces them to specialize in a sub-field. Such insulation can hinder the birth of ideas that arise from new connections, eventually slowing down […]

Recent developments on the slice rank polynomial method with applications (Mohamed Omar, HMC)

Davidson Lecture Hall, CMC 340 E 9th St, Claremont, CA, United States

The slice rank polynomial method, motivated by groundbreaking work of Croot, Lev and Pach and refined by Tao, has opened the door to the resolution of many problems in extremal combinatorics. We survey these results and discuss contributions in several of the speaker's recent papers.

How do mathematicians believe? (Prof. Brian P Katz)

Humanities Auditorium, Scripps College, and Zoom Claremont, CA, United States

Title: How do mathematicians believe? Speaker: Brian P Katz (BK), Department of Mathematics and Statistics, CSU, Long Beach Abstract: Love it or hate it, many people believe that mathematics gives humans access to a kind of truth that is more absolute and universal than other disciplines. If this claim is true, we must ask: what makes the […]

On Schauder’s Theorem and $s$-numbers (Daniel Akech Thiong, CGU)

Roberts North 105, CMC 320 E. 9th St., Claremont, CA, United States

Let \mathcal{L}(X,Y) denote the normed vector space of all continuous operators from \(X\) to \(Y\), \(X^*\) be the dual space of \(X\), and \(\mathcal{K}(X,Y)\) denote the collection of all compact operators from \(X\) to \(Y\). Denote by \(T^{*} \in \mathcal{L}(Y^{*}, X^{*} )\) the adjoint operator of \(T\in \mathcal{L} (X, Y)\). The well known theorem of […]

Applied Math Seminar: Adam Waterbury (UCSB)

Shanahan 2407 at Harvey Mudd College Claremont, CA, United States

Title: Approximating Quasi-Stationary Distributions with Interacting Reinforced Markov Chains Abstract: An important question in ecology is what conditions must be met for a population of interacting species to coexist. In realistic models of such populations, after a large enough amount of time has passed, one or more of the species are sure to face extinction. […]

On the geometry of lattice extensions (Max Forst, CGU)

Davidson Lecture Hall, CMC 340 E 9th St, Claremont, CA, United States

Given a lattice L, an extension of L is a lattice M of strictly greater rank so that L is equal to the intersection of the subspace spanned by L with M. In this talk, we will discus constructions of such lattice extensions with particular geometric invariants of M, such as the determinant, covering radius […]

Human Computers in Astronomy: Women Astronomers at Mount Wilson Observatory during the Early Twentieth Century (Prof. Eun-Joo Ahn)

Humanities Auditorium, Scripps College, and Zoom Claremont, CA, United States

Title: Human Computers in Astronomy: Women Astronomers at Mount Wilson Observatory during the Early Twentieth Century Speaker: Eun-Joo Ahn, Department of History, UC Santa Barbara Abstract: Mount Wilson Observatory was founded by astrophysicist George Ellery Hale in 1904 with funding from the Carnegie Institution of Washington. Since then, it has become one of the most prominent […]

Quantum metrics on the natural numbers (Katrine von Bornemann Hjelmborg, University of Southern Denmark)

Roberts North 105, CMC 320 E. 9th St., Claremont, CA, United States

Quantum metrics in the sense of Rieffel were introduced to prove some statements arising in the high-energy physics literature. Since then, the area of quantum metric geometry has been used to answer questions stemming from within mathematics as well. To prove such results, it is often the case that certain properties of a quantum metric […]

GEMS October 15th Session

Shanahan 1480, Harvey Mudd College 301 Platt Blvd., Claremont, CA, United States

H.S.M. Coxeter’s Theory of Accessibility: A Narrative in the Language of Synthetic Projective Geometry (Elena Marchisotto, Cal State Northridge)

Fletcher 110, Pitzer College 1050 N Mills Ave, Claremont, CA, United States

The relation of accessible points in a projective incidence plane defined by Coxeter in the 1960s is the focus of my narrative. It reveals historical pathways bookending the 19th and 20th centuries that bring G.K.C. von Staudt, Mario Pieri, Marvin Greenberg and others into the conversation. The published references to Coxeter’s theory, including his own, […]

Applied Math Seminar: Susan Friedlander (USC)

Shanahan 2407 at Harvey Mudd College Claremont, CA, United States

Title: Kolmogorov, Onsager and a Dyadic Model for Turbulence Abstract: We will briefly review Kolmogorov’s ( 41) theory of homogeneous turbulence and Onsager’s ( 49 ) conjecture that in 3-dimensional turbulent flows energy dissipation might exist even in the limit of vanishing viscosity. Although over the past 70 years there is a vast body of […]