# University of Toronto's Symplectic Geometry Seminar

Oct. 7 2002, 2:10 - 3
SS5017A

## "Cohomology of some symplectomorphism groups"

Abstract: In this talk, we will explain how the rational cohomology ring of Sympl(X) can be calculated when X is a rational symplectic 4-manifold. Complete results will be given for $CP^2$, $S^2\times S^2$ and their blow-ups at a ball of capacity $c$.