Galois cohomology of a $p$-adic field via $(\Phi ,\Gamma )$-modules in the imperfect residue field case

Abstract

For a $p$-adic local field $K$ with perfect residue field, L. Herr constructed a complex which computes the Galois cohomology of a $p$-torsion representation of the absolute Galois group of $K$ by using the theory of $(\Phi ,\Gamma )$-modules. We shall generalize his work to the imperfect residue field (the residue field has a finite $p$-basis) case.

18 pages, LaTeX, to appear in J. Math. Sci. Univ. Tokyo