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Time: Friday, March 11, 2011, 14h30-15h30

Location: Salle W

Finite group actions, rational fixed points and weak Néron models

Hélène Esnault (Université d'Essen - Personal website)

If G is a finite l-group acting on an affine space over a finite field K of cardinality prime to l, Serre and Bialynicki-Birula have shown that there exists a rational fixed point. We generalize this to the case where K is a henselian discretely valued field of characteristic zero with algebraically closed residue field and with residue characteristic different from l.

 

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