arxiv.org/abs/0906.4429v1
Computation of the Galois groups occuring in M. Papanikolas's study of Carlitz l…
In this note, we state a theorem of compution of the unipotent radical of the Galois group of an object $U$ of a tannakian category defined over a field of positive characteristic, extension of the unit object by a semi-simple one. We then give a c...