Spatial Ecology & Singularly Perturbed Reaction-Diffusion Equations
Prof. Arjen Doelman, Mathematisch Instituut, Lorentz Center; Leiden University, The Netherlands
Abstract: Pattern formation in ecological systems is driven by counteracting feedback mechanisms on widely different spatial scales. Moreover, ecosystem models…
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…
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…
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…
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…
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-…
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…
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. …
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…
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…