%0 Journal Article
%T Perfect Morse functions and exotic S^2 x S^2's
%A Jacob Rasmussen
%J Mathematics
%D 2010
%I arXiv
%X The main theorem of the paper shows that a smooth manifold which is homeomorphic to S^2xS^2 and has nonvanishing Ozsvath-Szabo invariant does not admit a perfect Morse function. I am withdrawing the paper because it is unclear to me if such a manifold exists.
%U http://arxiv.org/abs/1005.4674v2