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Universal deformation rings of modules for algebras of dihedral type of polynomial growth
Journal article   Peer reviewed

Universal deformation rings of modules for algebras of dihedral type of polynomial growth

Frauke M Bleher and Shannon N Talbott
Algebras and Representation Theory, Vol.17(1), pp.289-303
09/02/2012
DOI: 10.1007/s10468-012-9399-2
url
https://arxiv.org/pdf/1209.0181View
Open Access

Abstract

Alg. Represent. Theory 17 (2014), 289-303 Let k be an algebraically closed field, and let \Lambda\ be an algebra of dihedral type of polynomial growth as classified by Erdmann and Skowro\'{n}ski. We describe all finitely generated \Lambda-modules V whose stable endomorphism rings are isomorphic to k and determine their universal deformation rings R(\Lambda,V). We prove that only three isomorphism types occur for R(\Lambda,V): k, k[[t]]/(t^2) and k[[t]].
Mathematics - Representation Theory

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