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比利时vs摩洛哥足彩
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比利时vs摩洛哥足彩
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university of california san diego
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math 258 - differential geometry
mattew stoffregen
mit
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.
hosts: jianfeng lin and lei ni
december 4, 2019
1:00 pm
ap&m 5829
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