Seminars and colloquia

E.g., Apr 24, 2025

Shabnam Akhtari

Penn State Eberly College of Science
Representation of Integers by Binary Forms

May 6, 2025 - 4:00 pm to 5:00 pm

MATH 204

Let F(x, y) be a binary form of degree at least 3 which is irreducible over the rationals. For any fixed non-zero integer m, Thue showed that the equation F(x, y) =m has at most finitely many solutions in integers x, y. I will discuss some fundamental work on bounding the ... Read more
  • Number Theory

Maziyar Jalaal

University of Amsterdam
On Contact Lines of Newtonian, Viscoplastic, and Odd Fluids

May 6, 2025 - 4:00 pm to 5:00 pm

MATH 203

Capillary ripples in thin films reflect the fluid’s response to surface tension and viscous forces. We study ripple formation in Newtonian, viscoplastic, and odd viscous fluids at the contact line of a droplet spreading on a prewetted surface. We report: (1) a critical ... Read more
  • Fluids

Tai-Peng Tsai

UBC
Large discretely self-similar solutions to Oberbeck-Boussinesq system with Newtonian gravitational field

May 6, 2025 - 5:00 pm to 6:00 pm

MATH 105

Discretely self-similar solutions to Oberbeck-Boussinesq system with Newtonian gravitational field for large discretely self-similar initial data are constructed in this note, extending the construction of Brandolese and Karch (arXiv:2311.01093) on self-similar solutions. It ... Read more
  • Partial Differential Equations

Zhichao Wang

Fudan University
Existence of embedded minimal tori in three-spheres with positive Ricci curvature

May 6, 2025 - 5:00 pm to 6:00 pm

MATH 202

In this joint work with Xingzhe Li, we prove the strong Morse inequalities for the area functional in the space of embedded tori and spheres in the three sphere. As a consequence, we prove that in the three dimensional sphere with positive Ricci curvature, there exist at least ... Read more
  • Differential geometry

Bill Casselman

University of British Columbia
Langlands and L-functions

May 7, 2025 - 9:45 am to 10:45 am

MATX 1100

An attempt to explain Langlands' contributions to non-experts. Read more
  • Number Theory

John Stockie

Simon Fraser University
An immersed boundary model for fluid-structure interaction in the cochlea

May 7, 2025 - 10:30 am to 11:30 am

MATH 225

The mammalian ear has a remarkable ability to distinguish sounds that differ only slightly in frequency, while at the same time amplifying these signals so that they can be converted into neural impulses. This phenomenon is commonly attributed to some form of mechanical ... Read more
  • Scientific Computing

Claudius Zibrowius

Ruhr-University Bochum
Khovanov homology and Conway mutation

May 7, 2025 - 10:30 am to 11:30 am

MATH 104

What has homological mirror symmetry ever done for you? I will give my personal answer to that question and discuss joint work in progress with Liam Watson and Artem Kotelskiy concerning the behaviour of Khovanov homology under Conway mutation. Claudius was a postdoctoral ... Read more
  • Algebra and Algebraic geometry
  • Topology

Ben Young

University of Oregon
Single and Double Dimer problems from geometry

May 7, 2025 - 10:30 am to 11:30 am

MATH 104

This will be an introduction to the single- and double-dimer models, which arise in many places in mathematics (including in equivariant localization calculations of enumerative invariants). Read more
  • Algebra and Algebraic geometry
  • Topology

Yu-Ting Chen

University of Victoria
Stochastic many-body delta-Bose gas in two dimensions

May 7, 2025 - 10:30 am to 11:30 pm

MATH 204

Schrodinger operators with delta-function potentials have a long history in the literature and also receive renewed interest in other areas, such as the Kardar–Parisi–Zhang equation. Such operators have the characteristics for allowing closed analytic solutions, but the ... Read more
  • Probability

Jessica Conway

Penn State Eberly College of Science
Modeling HIV viral dynamics and ART

May 7, 2025 - 10:30 am to 11:30 pm

MATH 203

Antiretroviral therapy (ART) effectively controls HIV infection, suppressing HIV viral loads to levels undetectable using commercial testing. Typically, suspension of therapy is followed within weeks by rebound of viral loads to high, pre-therapy level. However recent ... Read more
  • Mathematical Biology