Relations on Mbarg,n via orbifold stable maps
Abstract
Using the equivariant virtual cycle of the moduli space of stable maps to [C/Zr], or equivalently, the vanishing of high-degree Chern classes of a certain vector bundle over the moduli space of stable maps to BZr, we derive relations in the Chow ring of Mbarg,n(BZr,0). These push forward to yield tautological relations on Mbarg,n.
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