比利时vs摩洛哥足彩
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university of california san diego
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math 292 - topology seminar
linh truong
university of michigan
the upsilon invariant and fibered knots
abstract:
in 2010, hedden showed that the ozsvath-szabo concordance invariant tau detects whether a fibered knot induces a tight contact structure on the three-sphere. in 2017, ozsvath, stipsicz, and szabo constructed a one-parameter family of concordance invariants upsilon, which recovers tau as a special case. i will discuss a sufficient condition using upsilon for the monodromy of the open book decomposition of a fibered knot to be right-veering. i will also discuss a generalization of a result of baker on ribbon concordances between fibered knots. this is joint work with dongtai he and diana hubbard.
host: jianfeng lin
october 27, 2020
11:30 am
zoom information: meeting id: 933 6734 4286 password: topology
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