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1. CJM 2015 (vol 67 pp. 1144)

Nystedt, Patrik; Ă–inert, Johan
Outer Partial Actions and Partial Skew Group Rings
We extend the classicial 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.

Keywords:outer action, partial action, minimality, topological dynamics, partial skew group ring, simplicity
Categories:16W50, 37B05, 37B99, 54H15, 54H20

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