Flexible Surfaces in $\mathbb{C}{P}^2$ and $S^2\times S^2$

Joshua Lehman

A surface $\hat{I}\pounds$ in a 4-manifold $M$ is called flexible if any mapping class of the surface arises as the restriction of a diffeomorphism $(M,\hat{I}\pounds )\to (M,\hat{I}\pounds )$. We construct flexible s…