Abstract
We characterize rational or ruled surfaces among all symplectic 4-manifolds by the existence of certain smoothly embedded spheres.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 609-613 |
| Number of pages | 5 |
| Journal | Proceedings of the American Mathematical Society |
| Volume | 127 |
| Issue number | 2 |
| State | Published - Dec 1 1999 |