Extensions panach\'ees autoduales
Algebraic Geometry
2010-11-23 v1
Abstract
We study self-duality of Grothendieck's blended extensions (extensions panach\'ees) 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
Cite
@article{arxiv.1011.4685,
title = {Extensions panach\'ees autoduales},
author = {Daniel Bertrand},
journal= {arXiv preprint arXiv:1011.4685},
year = {2010}
}
Comments
17 pages