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Conductors and the moduli of residual perfection

Borger, James


Let A be a complete discrete valuation ring with possibly imperfect residue field. The purpose of this paper is to give a notion of conductor for Galois representations over A which agrees with the classical Artin conductor when the residue field is perfect. The definition rests on two results of perhaps wider interest: there is a moduli space that parametrizes the ways of modifying A so that its residue field is perfect, and any Galois-theoretic object over A can be recovered from its pullback...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Mathematische Annalen
DOI: 10.1007/s00208-003-0490-1


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