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Frobenius action on l-adic Chen-Ruan cohomology

Michael A. Rose
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Abstract

We extend the definition of the Chen-Ruan cohomology ring to smooth, proper, tame, Deligne-Mumford stacks over fields of positive characteristic and prove that a modified version of the Frobenius action preserves the product.

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Michael A. Rose. 2008-12-23. Frobenius action on l-adic Chen-Ruan cohomology. https://arxiv.org/abs/math/0701213

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