|Princeton/IAS Symplectic Geometry Seminar|
|Topic:||A Heegaard Floer analog of algebraic torsion|
|Affiliation:||University at Buffalo, The State University of New York; von Neumann Fellow, School of Mathematics|
|Date:||Thursday, April 21|
|Time/Room:||10:30am - 11:30am/S-101|
The dichotomy between overtwisted and tight contact structures has been central to the classification of contact structures in dimension 3. Ozsvath-Szabo's contact invariant in Heegaard Floer homology proved to be an efficient tool to distinguish tight contact structures from overtwisted ones. In this talk, I will motivate, define, and discuss some properties of a refinement of the contact invariant in Heegaard Floer homology. This is joint work with Grodana Matic, Jeremy Van Horn-Morris, and Andy Wand.