Rational cohomology of an algebra need not be detected by Frobenius kernels

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Friedrich Knop has given an example of a polynomial algebra A in characteristic two with an unusual SL_2 action. We exhibit a nontrivial class in H^1(SL_2,A), not detected by Frobenius kernels.
3 pages

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Representation Theory, 20G10; 20G40

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http://salesiana.dossiersoluciones.com/handle/123456789/216681

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0901.3005
 http://arxiv.org/abs/0901.3005

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arXiv