On the Sn-equivariant Euler characteristic of M2,n.
نویسنده
چکیده
The Getzler’s formula relates the Sn-equivariant Hodge-Deligne polynomial of the space of ordered tuples of distinct points on a given variety X with the Hodge-Deligne polynomial of X. We obtain the analogue of this formula for the case when X has a nontrivial automorphism group. Collecting together all strata of M2 with different automorphism groups, we derive a formula for the Sn-equivariant Euler characteristic of M2,n.
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تاریخ انتشار 2008