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Algebraic Geometry Seminar: D. Zureick-Brown (GA Tech)

Date and time:
Room 304, Boyd Graduate Studies Bldg.

Speaker: D. Zureick-Brown, Georgia Tech

Title: The canonical ring of a stacky curve


Abstract: We give a generalization to stacks of the classical (1920's) theorem of Petri -- we give a presentation for the canonical ring of a stacky curve. This is motivated by the following application: we give an explicit presentation for the ring of modular forms for a Fuchsian group with cofinite area, which depends on the signature of the group. This is joint work with John Voight.

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