Conformal Block Divisors and the Nef Cone
نویسنده
چکیده
We show that sl2 conformal blocks do not cover the nef cone of M0,6, or the S9invariant nef cone of M0,9. A key point is to relate the nonvanishing of intersection numbers between these divisors and F-curves to the nonemptiness of some explicitly defined polytopes. Several experimental results and some open problems are also included.
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تاریخ انتشار 2011