Equations for Chow and Hilbert Quotients
نویسنده
چکیده
We give explicit equations for the Chow and Hilbert quotients of a projective scheme X by the action of an algebraic torus T in an auxiliary toric variety. As a consequence we provide GIT descriptions of these canonical quotients, and obtain other GIT quotients of X by variation of GIT quotient. We apply these results to find equations for the moduli space M0,n of stable genus zero n-pointed curves as a subvariety of a smooth projective toric variety defined via tropical methods.
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