Séminaires : Séminaire Théorie des Nombres

Equipe(s) : tn,
Responsables :Ziyang Gao, Marc Hindry, Bruno Kahn, João Pedro P. dos Santos
Email des responsables : ziyang.gao@imj-prg.fr
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http://www.imj-prg.fr/tn/STN/stnj.html

 


Orateur(s) S. Reiter - ,
Titre Katz' Existence Algorithm and its Application to the Inverse Galois Problem
Date05/03/2001
Horaire14:00 à 16:00
Diffusion
RésumeThis talk will be about a joint work with M. Dettweiler(Heidelberg). We present a new and elementary approach to Katz'Existence Algorithm for rigid local systems. We find a purelyalgebraic version of the middle convolution functor used by Katz.This functor commutes with the braiding group action on tuples ofmatrices. This yields a new approach in inverse Galois theory forrealizing subgroups of linear groups regularly as Galois groups overQ.
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