Andy WAND – Tight, non-fillable contact structures on 3-manifolds Carte non disponible Date/heure Date(s) - 6 mai 2016 Catégories Pas de Catégories The modern development of contact geometry in 3 dimensions has seen several (due to Giroux, Wendl, Latschev and Wendl, Hutchings, and others) invariants of contact structures meant in some sense to measure non-(Stein/symplectic)-fillability of the structure. We will discuss a new approach which uses Heegaard Floer homology to define an invariant with a similar aim, but which has several desirable properties lacking in earlier approaches. This is joint with joint work with Kutluhan, Matic, and Van Horn-Morris. http://www.math.sciences.univ-nantes.fr/~wand/ Andy WAND [
Andy WAND – Tight, non-fillable contact structures on 3-manifolds Carte non disponible Date/heure Date(s) - 6 mai 2016 Catégories Pas de Catégories The modern development of contact geometry in 3 dimensions has seen several (due to Giroux, Wendl, Latschev and Wendl, Hutchings, and others) invariants of contact structures meant in some sense to measure non-(Stein/symplectic)-fillability of the structure. We will discuss a new approach which uses Heegaard Floer homology to define an invariant with a similar aim, but which has several desirable properties lacking in earlier approaches. This is joint with joint work with Kutluhan, Matic, and Van Horn-Morris. http://www.math.sciences.univ-nantes.fr/~wand/ Andy WAND [