Journal
CANADIAN MATHEMATICAL BULLETIN-BULLETIN CANADIEN DE MATHEMATIQUES
Volume 57, Issue 3, Pages 511-519Publisher
CANADIAN MATHEMATICAL SOC
DOI: 10.4153/CMB-2014-011-1
Keywords
partial skew group rings; simple rings; partial actions; abelian groups
Categories
Funding
- CNPq
- Capes [PVE 085/2012]
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Let A be a ring with local units, E a set of local units for A, G an abelian group, and a a partial action of G by ideals of A that contain local units. We show that A star(alpha) G is simple if and only if A is G-simple and the center of the corner e delta(0)(A star(alpha) G)e delta(0) is a field for all e is an element of E. We apply the result to characterize simplicity of partial skew group rings in two cases, namely for partial skew group rings arising from partial actions by clopen subsets of a compact set and partial actions on the set level.
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