Contact Structures with Distinct Heegaard Floer Invariants
arXiv:math/0309326
Abstract
We prove that the contact structures on Y= dX induced by non-homotopic Stein structures on the 4-manifold X have distinct Heegaard Floer invariants.
15 pages, 7 figures; a minor mistake corrected, an appendix reviewing the Akbulut-Ozbagci construction of Lefschetz fibrations added, references updated