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Extensions panachées autoduales

Published online by Cambridge University Press:  06 March 2013

Daniel Bertrand*
Affiliation:
Institut de Mathématiques de Jussieubertrand@math.jussieu.fr
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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.

Type
Research Article
Copyright
Copyright © ISOPP 2013 

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References

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