English

Classification of Gorenstein Toric Del Pezzo Varieties in arbitrary dimension

Algebraic Geometry 2009-04-14 v1 Combinatorics

Abstract

A nn-dimensional Gorenstein toric Fano variety XX is called Del Pezzo variety if the anticanonical class KX-K_X is a (n1)(n-1)-multiple of a Cartier divisor. Our purpose is to give a complete biregular classfication of Gorenstein toric Del Pezzo varieties in arbitrary dimension n2n \geq 2. We show that up to isomorphism there exist exactly 37 Gorenstein toric Del Pezzo varieties of dimension nn which are not cones over (n1)(n-1)-dimensional Gorenstein toric Del Pezzo varieties. Our results are closely related to the classification of all Minkowski sum decompositions of reflexive polygons due to Emiris and Tsigaridas and to the classification up to deformation of nn-dimensional almost Del Pezzo manifolds obtained by Jahnke and Peternell.

Keywords

Cite

@article{arxiv.0904.1880,
  title  = {Classification of Gorenstein Toric Del Pezzo Varieties in arbitrary dimension},
  author = {Victor Batyrev and Dorothee Juny},
  journal= {arXiv preprint arXiv:0904.1880},
  year   = {2009}
}

Comments

Dedicated to the memory of Professor V. A Iskovskih, 34 pages, LaTeX