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Abstract: We exhibit cocycles representing certain classes in the rational cohomologyof of the general linear group with coefficients in the divided powers of aFrobenius twist of the adjoint representation. These classes- existence wasanticipated by van der Kallen, and they intervene in the proof that reductivelinear algebraic groups have finitely generated cohomology algebras.



Autor: Antoine Touzé

Fuente: https://arxiv.org/







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