On cyclic strong exceptional collections of line bundles on surfaces

被引:3
|
作者
Elagin, Alexey [1 ]
Xu, Junyan [2 ]
Zhang, Shizhuo [3 ]
机构
[1] Russian Acad Sci, Steklov Math Inst, 8 Gubkina St, Moscow 119991, Russia
[2] Indiana Univ, Dept Math, 831 E Third St, Bloomington, IN 47405 USA
[3] Univ Edinburgh, Sch Math, JCMB Bldg,Kings Bldg, Edinburgh EH9 3FD, Midlothian, Scotland
基金
欧洲研究理事会; 俄罗斯科学基金会;
关键词
Weak del Pezzo surface; Exceptional collection; Line bundle; SEQUENCES; SHEAVES;
D O I
10.1007/s40879-020-00417-w
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We study exceptional collections of line bundles on surfaces. We prove that any full cyclic strong exceptional collection of line bundles on a rational surface is an augmentation in the sense of Lutz Hille and Markus Perling. We find simple geometric criteria of exceptionality (strong exceptionality, cyclic strong exceptionality) for collections of line bundles on weak del Pezzo surfaces. As a result, we classify smooth projective surfaces admitting a full cyclic strong exceptional collection of line bundles. Also, we provide an example of a weak del Pezzo surface of degree 2 and a full strong exceptional collection of line bundles on it which does not come from augmentations, thus answering a question by Hille and Perling.
引用
收藏
页码:69 / 115
页数:47
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