Homology classes that can be represented by embedded spheres in rational surfaces |
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| Authors: | GAO Hongzhu GUO Ren |
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| Affiliation: | Department of Mathematics, Beijing Normal University, Beijing 100875, China |
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| Abstract: | The problem of embedding spheres in rational surfaces CP 2#n 2 is studied. For homology classes u = (b 1 + k, b 2,...,b n) with positive self-intersection numbers, a necessary and sufficient condition to detect its representability is given when k ≤ 5. |
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| Keywords: | four manifold embedded sphere self-intersection number |
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