Localisations and Completions of Skew Power Series Rings

Details Localisations and Completions of Skew Power Series Rings Localisations and Completions of Skew Power Series Rings

2007-11-16

arxiv.org/abs/0711.2669v1

Am. J. Math. 132, No. 1, 1-36 (2010)

Mathematics

Rings and Algebras

26 pages

Scientific paper

This paper is a natural continuation of the study of skew power series rings A initiated in [P. Schneider and O. Venjakob, On the codimension of modules over skew power series rings with applications to Iwasawa algebras, J. Pure Appl. Algebra 204 (2005), 349 - 367.]. We construct skew Laurent series rings B and show the existence of some canonical Ore sets S for the skew power series rings A such that a certain completion of the localisation A_S is isomorphic to B. This is applied to certain Iwasawa algebras. Finally we introduce subrings of overconvergent skew Laurent series rings.

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