EXTREMAL EFFECTIVE DIVISORS ON M1,n
نویسندگان
چکیده
For every n ≥ 3, we exhibit infinitely many extremal effective divisors on M1,n, the Deligne-Mumford moduli space parameterizing stable genus one curves with n ordered marked points.
منابع مشابه
EXTREMAL EFFECTIVE DIVISORS OF BRILL-NOETHER AND GIESEKER-PETRI TYPE IN M1,n
We show that certain divisors of Brill-Noether and Gieseker-Petri type span extremal rays of the effective cone in the moduli space of stable genus one curves with n ordered marked points. In particular, they are different from the infinitely many extremal rays found in [CC].
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