Seminar

Augmentations in knot contact homology and SL(2,C) character varieties

Symplectic geometry and topology

27 October 14:00 - 15:00

Christopher Cornwell - CIRGET

We will discuss some recent results on obtaining information about the SL(2,C) charater variety of the double branched cover over a knot from augmentations of the DGA of its unit conormal lift. We will also discuss some applications, such as determining when a knot complement has a simple SU(2) character variety (which is of interest for singular instanton knot homology) and when the fundamental group of the double branched cover has a left-invariant order (which is relevant to a conjecture of Boyer-Gordon-Watson).
Organizers
Tobias Ekholm,
Uppsala University
Yakov Eliashberg
Stanford University
Lenhard Ng
Duke University
Ivan Smith
University of Cambridge

Program
Contact

Tobias Ekholm

tobias.ekholm@math.uu.se

Other
information

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