The canonical ring of a stacky curve


Generalizing the classical theorems of Max Noether and Petri, we describe generators and relations for the canonical ring of a stacky curve, including an explicit Gröbner basis. We work in a general algebro-geometric context and treat log canonical and spin canonical rings as well. As an application, we give an explicit presentation for graded rings of… (More)


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@inproceedings{Voight2015TheCR, title={The canonical ring of a stacky curve}, author={John Voight and David Zureick-Brown}, year={2015} }