Del Pezzo surfaces with 13 ( 1 , 1 ) points

Del Pezzo surfaces with 13 ( 1 , 1 ) points
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具有 13 ( 1 , 1 ) 点的 Del Pezzo 曲面

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通讯作者:
H. Samtleben
H. Samtleben
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作者:
Bastien Duboeuf;E. Malek;H. Samtleben

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.我们将29个qG-变形族中具有13(1,1)个点的非光滑del Pezzo曲面分类为6个非投影级联(这与Fujita和Yasutake在索引为3的log del Pezzo曲面的分类中的工作重叠,arXiv:1401.1283 [math.AG]),我们将它们的双正则不变量列表,我们为所有族中的曲面给出良好的模型构造作为rep商簇中的退化轨迹,并且我们证明了恰好26个族允许qG-退化为复曲面。这项工作是研究orbifold del Pezzo表面镜像对称性的计划的一部分(Akhtar等人,Proc Am Math Soc 144(2):513-527,2016)。
. We classify non-smooth del Pezzo surfaces with 13 ( 1 , 1 ) points in 29 qG-deformation families grouped into six unprojection cascades (this overlaps with work of Fujita and Yasutake in Classification of log del Pezzo surfaces of index three, arXiv:1401.1283 [math.AG]), we tabulate their biregular invariants, we give good model constructions for surfaces in all families as degeneracy loci in rep quotient varieties, and we prove that precisely 26 families admit qG-degenerations to toric surfaces. This work is part of a program to study mirror symmetry for orbifold del Pezzo surfaces (Akhtar et al. in Proc Am Math Soc 144(2):513–527, 2016).