Videos

Symplectic 4-manifolds of the form S^1 x N

Presenter
November 3, 2011
Keywords:
  • Shiing-Shen Chern
  • differential geometry
  • symplectic geometry
  • circle bundle
  • fibrations
  • low-dimensional topology
MSC:
  • 53-xx
  • 53Cxx
  • 53D05
  • 53Dxx
  • 14Dxx
  • 53D30
Abstract
Thurston showed in 1976 that if a 3-manifold N fibers over the circle, then S^1 x N supports a symplectic structure. We show that the converse holds: if S^1 x N is symplectic, then N fibers over S^1. This is joint work with Stefano Vidussi.