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Extensions panachées autoduales

We study self-duality of Grothendieck's blended extensions (extensions panachées) in the context of a tannakian category. The set of equivalence classes of symmetric, resp. antisymmetric, blended extensions is naturally endowed with a torsor structure, which enables us to compute the unipotent radical of the associated monodromy groups in various situations

3 nodes2 linksoverview previewExtensions panachées autoduales
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Extensions panachées autoduales3 visible / 3 total nodes / 2 links
AuthorshipTopic signalWExtensions panachées autodualespreprint / 2010ADaniel BertrandResearcherTmath.AG5393 works
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Extensions panachées autoduales

preprint / 2010

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