(φ,τ)-modules diff\'erentiels et repr\'esentations potentiellement semi-stables
Abstract
Soit K un corps p-adique et soit V une repr\'esentation p-adique de GK = Gal(K/K). La surconvergence des (φ,τ)-modules nous permet d'attacher \`a V un φ-module diff\'erentiel \`a connexion Dτ,rig(V) sur l'anneau de Robba Bτ,rig,K. On montre dans cet article comment retrouver les invariants Dcris(V) et Dst(V) \`a partir de Dτ,rig(V), et comment caract\'eriser les repr\'esentations potentiellement semi-stables, ainsi que celles de E-hauteur finie, \`a partir de la connexion. Let K be a p-adic field and let V be a p-adic representation of GK=Gal(K/K). The overconvergence of (φ,τ)-modules allows us to attach to V a differential φ-module Dτ,rig(V) on the Robba ring Bτ,rig,K that comes equipped with a connection. We show in this paper how to recover the invariants Dcris(V) and Dst(V) from Dτ,rig(V), and give a characterization of both potentially semi-stable representations of GK and finite E-height representations in terms of the connection operator.
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