May 25, 2022 @ 3:30 pm

Skye 284

M. Susan Montgomery, USC
Orthogonal representations: from groups to Hopd algebras to tensor categories
Let G be a finite group and V a finite dimensional representation of G over the complex numbers. According to a wonderful theorem of Frobenius and Schur from 1906, there are only three possibilities for V:
V has a non-…

May 18, 2022 @ 12:00 pm

Skye Hall 268

Catherine Searle, Wichita State University
Positively curved manifolds are notoriously hard to classify. In the early 90's, based on the observation that the few known examples are all highly symmetric, Karsten Grove proposed his "Symmetry Program" which suggests trying to classify such manifolds with the additional hypothesis of…

May 11, 2022 @ 4:00 pm

May 11th - Skye Hall 284
May 14th - Olmstead 1208

Burton Jones Lecture Information:
Bill Goldman, University of Maryland
May 11th - Skye Hall 284
Classification of Geometric Structures on Manifolds
In 1872 F. Klein, based on ideas of S. Lie, proposed that the classical geometries be understood via the theory of transformation groups and homogeneous spaces. Later in the…

May 06, 2022 @ 9:00 am

Zoom

Dr. Kinnari Atit, School of Education, University of California at Riverside
In the U.S., there is a disparity between the number of students pursuing STEM and the number of professionals needed to meet global and economic demands. Of those that do pursue STEM, few are women or individuals from underrepresented minority…

April 27, 2022 @ 4:00 pm

Skye 284

Dr. Rafe Mazzeo, Stanford
Gravitational instantons are some of the simplest Riemannian manifolds with special holonomy: they are noncompact, Ricci flat, hyperkähler four-manifolds. There is now a scheme for classifying all of them which is well underway. Many of these spaces arise as moduli spaces of solutions to certain gauge-…

April 15, 2022 @ 9:00 am

Zoom

Challenges and Advantages of a Principle-Based Calculus Course
Speaker: Dr. David Weisbart, Department of Mathematics, University of California at Riverside
Abstract: We will discuss what it means for a course to be principle-based and describe an underlying philosophy of teaching and learning that supports principle-based…

February 16, 2022 @ 4:00 pm

Zoom

Fanghua Lin, Courant Institute, NYU
Energy minimizing harmonic maps from a three-ball into the two-sphere are well understood. A natural existence question for a continuous harmonic map with a suitably given Dirichlet boundary value or in a given homotopic class [a problem that I learned from R.Schoen in mid-80s] remains open. …

January 26, 2022 @ 4:00 pm

Zoom

Nicola Garofalo, University of Padova, Italy & Arizona State University
A basic problem in analysis is the Dirichlet problem for the Laplacian in the upper half-space. It is a classical fact that the trace of the Neumann derivative of the solution equals the half-Laplacian of the boundary datum. In a seminal 2007 paper…

December 01, 2021 @ 4:00 pm

Skye 284

Po-Ning Chen, UCR
Abstract: The definition of angular momentum in general relativity has been a subtle issue since the 1960s, due to the 'supertranslation ambiguity'.
In this talk, we will discuss how the mathematical theory of quasilocal mass and angular momentum leads to a new definition of angular
momentum at null infinity…

November 17, 2021 @ 11:00 am

Zoom

Anton Thalmaier (University of Luxembourg)
Abstract: We explain some new formulas for the Hessian of the heat semigroup generated by the Laplace-Beltrami operator on a Riemannian manifold and describe geometric applications related to Calderón-Zygmund type inequalities. Our approach relies on probabilistic methods from Stochastic…

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