Abstract
We characterize rational or ruled surfaces among all symplectic 4-manifolds by the existence of certain smoothly embedded spheres.
Original language | English (US) |
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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 |