Optimal bound for the number of (−1)-curves on extremal rational surfaces
| Autor: | Mustapha Lahyane |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | International Journal of Mathematics and Mathematical Sciences, Vol 31, Iss 2, Pp 123-126 (2002) |
| Druh dokumentu: | article |
| ISSN: | 0161-1712 1687-0425 01611712 |
| DOI: | 10.1155/S0161171202013194 |
| Popis: | We give an optimal bound for the number of (−1)-curves on an extremal rational surface X under the assumption that −KX is numerically effective and having self-intersection zero. We also prove that a nonelliptic extremal rational surface has at most nine (−1)-curves. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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