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Extensions panachées autoduales
Published online by Cambridge University Press: 06 March 2013
Abstract
We study self-duality of Grothendieck's blended extensions 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.
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- Copyright © ISOPP 2013
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