Outer Partial Actions and Partial Skew Group Rings
Canadian journal of mathematics, Tome 67 (2015) no. 5, pp. 1144-1160
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We extend the classical notion of an outer action $\alpha $ of a group $G$ on a unital ring $A$ to the case when $\alpha $ is a partial action on ideals, all of which have local units. We show that if $\alpha $ is an outer partial action of an abelian group $G$ , then its associated partial skew group ring $A\,{{\star }_{\alpha }}\,G$ is simple if and only if $A$ is $G$ -simple. This result is applied to partial skew group rings associated with two different types of partial dynamical systems.
Mots-clés :
16S35, 16W50, 37B05, 37B99, 54H15, 54H20, outer action, partial action, minimality, topological dynamics, partial skew group ring, simplicity
Nystedt, Patrik; Öinert, Johan. Outer Partial Actions and Partial Skew Group Rings. Canadian journal of mathematics, Tome 67 (2015) no. 5, pp. 1144-1160. doi: 10.4153/CJM-2014-043-8
@article{10_4153_CJM_2014_043_8,
author = {Nystedt, Patrik and \"Oinert, Johan},
title = {Outer {Partial} {Actions} and {Partial} {Skew} {Group} {Rings}},
journal = {Canadian journal of mathematics},
pages = {1144--1160},
year = {2015},
volume = {67},
number = {5},
doi = {10.4153/CJM-2014-043-8},
url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2014-043-8/}
}
TY - JOUR AU - Nystedt, Patrik AU - Öinert, Johan TI - Outer Partial Actions and Partial Skew Group Rings JO - Canadian journal of mathematics PY - 2015 SP - 1144 EP - 1160 VL - 67 IS - 5 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2014-043-8/ DO - 10.4153/CJM-2014-043-8 ID - 10_4153_CJM_2014_043_8 ER -
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