Past Events

E.g., Nov 26, 2025

Alberto Verjovsky

Instituto de Matemáticas, UNAM
Adelic Loop Groups

November 26, 2025

Math 126

We define the adelic sphere \(\mathbb{C}P^1_\mathbb{Q}\) , which is the adelic version of the Riemann sphere, and it is a pro-algebraic Riemann surface; topologically, it is the suspension of the adelic one-dimensional solenoid \(A/\mathbb{Q}\) (which in turn is a fiber bundle over the circle,... Read more

  • Topology

Tainara Borges

The University of Pennsylvania
Falconer-type results for finite graphs with multiple pins

November 26, 2025

ESB 4133 (PIMS Library)

Falconer-type problems seek Hausdorff-dimension thresholds guaranteeing that thin subsets of R d contain rich geometric patterns. For a compact set E ⊂ R d , the classical object is the distance set ∆(E) = { |x − y| : x, y ∈ E }, and its pinned variant ∆y (E) = { |x − y| : x ∈ E }. Falconer’s... Read more

  • Harmonic Analysis and Fractal Geometry

Yucheng Liu

Peking University
Subcritical two-point functions for high-dimensional statistical mechanical models

November 26, 2025

ESB 2012

The subcritical two-point function for the Ising model, percolation, or the self-avoiding walk on Zd, decays like its critical counterpart when x is small, and exhibits the Ornstein--Zernike decay when x is large. We report recent progress on the slightly subcritical two-point function for the... Read more

  • Probability

Sug Woo Shin

UC Berkeley
The fundamental lemma and stabilization

November 26, 2025

MATX 1102

Motivated by the Langlands functoriality conjecture, we would like to stabilize the (twisted) trace formula following Langlands, Kottwitz, Arthur, Clozel, Labesse, and Moeglin-Waldspurger. The goal of this expository talk is to make sense of this, in some detail as far as regular elliptic terms... Read more

  • Number Theory

Dr. Anamika Agrawal

Allen Institute, University of Washington
From Form to Function: Mathematical models to translate cellular physiology into neural function and dysfunction

November 26, 2025

ESB 5104

Neurons are often viewed as the fundamental units of computation, yet they are also living cells that must sustain this computation within the physical and metabolic limits of biology. In this talk, I present a quantitative framework for understanding neural function as a problem of optimization... Read more

  • Mathematical Biology


A Morning of Arithmetic of Algebraic Groups

November 26, 2025

MATX 1102

Join us on November 26th for a morning of arithmetic of algebraic groups.

Organizer: Sujatha Ramdorai

SCHEDULE TIME SPEAKER TITLE & ABSTRACT 10:30 AM - 11 AM Mishty Ray Geometric... Read more
  • Algebra and Algebraic geometry

Tainara Borges

The University of Pennsylvania
Nonempty interior of pinned distance and tree sets

November 25, 2025

ESB 4133 (PIMS Library)

Given a compact set E ⊂ R^d , its distance set is ∆(E) = { |x − y| : x, y ∈ E }, and for y ∈ E, the pinned distance set of E at y is ∆ y (E) = { |x − y| : x ∈ E }. A classical result of Mattila and Sjölin shows that the unpinned distance set ∆(E) has nonempty interior whenever dim(E) > (d+1)/... Read more

  • Harmonic Analysis and Fractal Geometry

Manh Linh Nguyen

IMJ-PRG-Paris
Patching and the nine-term Mayer-Vietoris sequence for complexes of tori

November 24, 2025

MATH 126

We present the patching method, a machinery developed by Harbater–Hartmann–Krashen and various other authors, dedicated to the study of arithmetics of linear algebraic groups over function fields of curves over complete discretely valued field such as ℚₚ(T). Then, we present a new result in this... Read more

  • Algebra and Algebraic geometry

Nguyễn Mạnh Linh

Institut de Mathématiques de Jussieu-Paris Rive Gauche
Patching and the nine-term Mayer–Vietoris sequence for complexes of tori

November 24, 2025

MATH 126

We present the patching method, a machinery developed by Harbater–Hartmann–Krashen and various other authors, dedicated to the study of arithmetics of linear algebraic groups over function fields of curves over complete discretely valued field such as ℚₚ(T). Then, we present a new result in this... Read more

  • Algebra and Algebraic geometry

Manh Linh Nguyen

IMJ-PRG Paris
Patching and the nine-term Mayer–Vietoris sequence for complexes of tori

November 24, 2025

We present the patching method, a machinery developed by Harbater–Hartmann–Krashen and various other authors, dedicated to the study of arithmetics of linear algebraic groups over function fields of curves over complete discretely valued field such as ℚₚ(T). Then, we present a new result in this... Read more

  • Algebra and Algebraic geometry