A conductor formula for completed group algebras
Documenta mathematica, Tome 19 (2014), pp. 601-627
Let o be the ring of integers in a finite extension of Qp. If G is a finite group and Γ is a maximal o-order containing the group ring o[G], Jacobinski's conductor formula gives a complete description of the central conductor of Γ into o[G] in terms of characters of G. We prove a similar result for completed group algebras o[[G]], where G is a p-adic Lie group of dimension 1. We will also discuss several consequences of this result.
Classification :
11R23, 16H10, 16H20
Mots-clés : central conductor, completed group algebras, extensions of lattices, Fitting invariants
Mots-clés : central conductor, completed group algebras, extensions of lattices, Fitting invariants
@article{10_4171_dm_457,
author = {Andreas Nickel},
title = {A conductor formula for completed group algebras},
journal = {Documenta mathematica},
pages = {601--627},
year = {2014},
volume = {19},
doi = {10.4171/dm/457},
url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/457/}
}
Andreas Nickel. A conductor formula for completed group algebras. Documenta mathematica, Tome 19 (2014), pp. 601-627. doi: 10.4171/dm/457
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