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Concordance invariants from covering involutions

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András Stipsicz
Alfréd Rényi Institute, Budapest
Tue, 17/09/2019 - 09:30 - 10:20
MPIM Lecture Hall

We use the branched cover construction and ideas from connected Floer homology to define concordance invariants of knot in $S^3$. Calculations can be performed for double branched covers, in which case the invariants are trivial for alternating and torus knots and non-trivial for some pretzel knots. This allows us to derive some independence results in the smooth concordance group of knots.

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