On Normalized Ricci Flow and Smooth Structures on Four-Manifolds with $b^{+}=1$

Masashi Ishida, Rares Rasdeaconu, Ioana Suvaina

We find an obstruction to the existence of non-singular solutions to the normalized Ricci flow on four-manifolds with $b^{+}=1$. By using this obstruction, we study the relationship…