Upcoming Events

Colloquium – Talk by Dr. John Urschel: October 23, 2025

Oct. 14, 2025—October 23, 2025 (Thursday), 4:10 pm Dr. John Urschel, Massachusetts Institute of Technology Nodal Statistics for Graphs and Matrices The study of discrete nodal statistics, that is, data regarding the zeros of Laplacian eigenvectors, provides insight into structural properties of graphs and matrices, and draws strong parallels with classical results in analysis for Laplacian eigenfunctions....

Colloquium – Talk by Alexander Dunn: October 7, 2025

Sep. 30, 2025—October 7, 2025 (Wednesday), 4:10 pm Alexander Dunn, Georgia Institute of Technology Recent progress on Gauss sums and primes Large sieve inequalities are a fundamental tool used to investigate prime numbers and exponential sums. In this Colloquium I will explain my work that resolves a 1978 conjecture of S. Patterson (conditional on the Generalized Riemann hypothesis) concerning the bias...

Colloquium – Talk by Peter Bubenik: October 2, 2025

Sep. 30, 2025—October 2, 2025 (Thursday), 4:10 pm Dr. Peter Bubenik, University of Florida A guided tour of Applied Algebraic Topology Topological data analysis develops methods based on algebraic topology to provide insight into the structure of scientific data. Often these tools come with theorems guaranteeing that their output is stable with respect perturbations of the input....

Colloquium – Talk by Ronnie Pavlov: April 2, 2025

Apr. 2, 2025—April 2, 2025 (Wednesday), 4:10 pm Ronnie Pavlov, University of Denver Title: “Complexity in symbolic dynamical systems” There are various ways in which one can describe the simplicity/complexity of a dynamical system. One is in terms of qualitative dynamical properties, such as periodicity/equicontinuity (simple) or mixing/independence (complex). For symbolically defined dynamical systems called subshifts, there is...

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Geometry and Topology Seminar: April 4, 2025

Mar. 31, 2025—Speaker: Hannah Housden (Vanderbilt University) Title: TBA Abstract: TBA

Colloquium – Talk by Steve Trettel: March 20, 2025

Mar. 20, 2025—March 26, 2025 (Wednesday), 4:10 pm Steve Trettel, University of San Francisco What do 3-manifolds Look Like? Thurston’s Geometrization Theorem, later proved by Perelman, describes 3-manifolds in terms of geometric building blocks. Each manifold decomposes into pieces modeled on one of just eight homogeneous 3-dimensional spaces, known as the Thurston geometries. In this talk, we...

Shanks Lecture: May 19-22, 2025

Mar. 10, 2025—May 19-22, 2025, with Shanks Lecturer Doron Lubinsky Constructing Functions 2025 Celebrating Ed Saff’s 80th birthday Conference Website

Topology and Group Theory Seminar: April 16, 2025

Mar. 9, 2025—Speaker: Robbie Lyman (Rutgers) Title: Graphical models for groups Abstract: In geometric group theory, we love groups and graphs. Every (abstract) group has (many) Cayley graphs, each one associated with a choice of a generating set. Recently I’ve been curious about topological groups, inspired by the budding theory around and community of people inspired by mapping class...

Topology and Group Theory Seminar: April 9, 2025

Mar. 9, 2025—Speaker: John Ratcliffe (Vanderbilt) Title: The G-index of a spin closed hyperbolic 4-manifold M Abstract: In this talk, we will show how to compute the G-index of a spin closed hyperbolic 4-manifold M for a group G of symmetries of a spin structure on M. As an example, we will compute the G-index for the group G of symmetries of the fully symmetric spin structure on...

Topology and Group Theory Seminar: April 2, 2025

Mar. 8, 2025—Speaker: Talia Fernos (Vanderbilt) Title: Lattice envelopes and groups acting AU-acylindrically on products of hyperbolic spaces Abstract: In this joint work with Balasubramanya, we explore the capacity for a group acting AU-acylindrically on a finite product of delta-hyperbolic spaces to satisfy three properties introduced by Bader, Furman, and Sauer. When satisfied, these properties restrict the potential ambient group...

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