Log del Pezzo surfaces with not small fractional indices

被引：3

作者：

Fujita, Kento ^{[1
]}

机构：

[1] Kyoto Univ, Dept Math, Kyoto 6068502, Japan

来源：

MATHEMATISCHE NACHRICHTEN | 2016年 / 289卷 / 01期

关键词：

Del Pezzo surface; rational surface; extremal ray;

D O I：

10.1002/mana.201400254

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

For a log del Pezzo surface S, the fractional index r (S) is an element of Q(>0) is the maximum of r with which - K-S can be written as r times some Cartier divisor. We classify all the log del Pezzo surfaces S with r (S) >= 1/2, after the technique of Nakayama. (C) 2015 WILEY- VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：34 / 59

页数：26

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