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Department of Mathematics,
Department of Mathematics,
University of California San Diego
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Math 258 - Differential Geometry
Matthew Stoffregen
Massachusetts Institute of Technology
An infinite-rank summand of the homology cobordism group
Abstract:
The homology cobordism group of integer homology three-spheres is a natural invariant of interest to four-dimensional topologists. In this talk, we recall its definition and give a short introduction to involutive Floer homology, As an application, we see that there is an infinite-rank summand of the homology cobordism group. This includes joint work with Irving Dai, Jen Hom, and Linh Truong.
Host: Jianfeng Lin
December 4, 2019
1:00 PM
AP&M 5829
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