Title: Giroux torsion and Floer homology invariant

Speaker: Jiajun Wang (BICMR & Peking University)

Time: October 25, 3:10pm - 5:00pm

Address: Room 1328 at BICMR, Resource Plaza, Peking University

Abstract:
Giroux correspondence relates contact structures on three-manifolds with open books, from which we can define a contact invariant from Heegaard Floer homology of the corresponding fibred knots. In appearance of $2pi$ Giroux torsion, the invariant vanishes. I would like to talk about some background of this topic for future research.