Skip to main
Math equations
George Mason University
Events

Upcoming Events

Apr4

PhD Dissertation Defense - Environmental Science & Policy

Apr 4, 2025, 1:00 - 3:00 PM

HYBRID 
In person at Potomac Science Center 3102 and
Virtual on Zoom (contact espgrad@gmu.edu for Zoom meeting info)

Apr4

Topology, Algebraic Geometry, and Dynamics Seminar (TADS): Chern classes and exotic G-manifolds

Apr 4, 2025, 1:30 - 2:30 PM

Apr4

Applied & Computational Mathematics seminar: Data-Adaptive Partitioning Algorithms, Extensions, and Applications

Apr 4, 2025, 1:30 - 2:30 PM

View Calendar

Topology, Algebraic Geometry, and Dynamics Seminar (TADS): Chern classes and exotic G-manifolds

Apr 4, 2025, 1:30 - 2:30 PM

 

Speaker: Oliver Wang, University of Virginia

Title: Chern classes and exotic G-manifolds

 

Abstract: Smooth structures on manifolds have been a central part of geometric topology ever since Milnor discovered exotic 7-spheres. Kirby-Siebenmann showed that high dimensional closed manifolds have only finitely many smooth structures. One can ask whether an analogue of Kirby-Siebenmann's result holds in the equivariant setting. In this talk, I will discuss a construction of equivariant smooth structures for G-manifolds and how the cohomology of the fixed set can give rise to infinitely many equivariant smooth structures.

 

Date/Time: April 4, 1:30pm-2:30pm

Location: Exploratory Hall, Room 4208

* The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.