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

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dc.creatorvan der Kallen, Wilberd
dc.date2009-01-20
dc.date.accessioned2026-07-07T12:32:08Z
dc.date.available2026-07-07T12:32:08Z
dc.descriptionFriedrich 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.
dc.description3 pages
dc.identifierhttps://arxiv.org/abs/0901.3005
dc.identifierhttp://arxiv.org/abs/0901.3005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216681
dc.subjectRepresentation Theory
dc.subject20G10; 20G40
dc.titleRational cohomology of an algebra need not be detected by Frobenius kernels
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