• Corpus ID: 9124434

Canonical divisors on T-varieties

@inproceedings{Suss2008CanonicalDO,
  title={Canonical divisors on T-varieties},
  author={Hendrik Suss},
  year={2008}
}
Generalising toric geometry we study compact varieties admitting lower dimensional torus actions. In particular we describe divisors on them in terms of convex geometry and give a criterion for their ampleness. These results may be used to study Fano varieties with small torus actions. As a first result we classify log del Pezzo C∗-surfaces of Picard number 1 and Gorenstein index ≤ 3. In further examples we show how classification might work in higher dimensions and we give explicit… 

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