# Geometric Weil representation in characteristic two

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1 Géométrie IECL - Institut Élie Cartan de Lorraine

Abstract : Let k be an algebraically closed field of characteristic two. Let R be the ring of Witt vectors of length two over k. We construct a group stack \hat G over k, the metaplectic extension of the Greenberg realization of Sp {2n}R. We also construct a geometric analog of the Weil representation of \hat G, this is a triangulated category on which \hat G acts by functors. This triangulated category and the action are geometric in a suitable sense.

Autor: Alain Genestier - Sergey Lysenko -

Fuente: https://hal.archives-ouvertes.fr/

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