The Ideal Intersection Property for Groupoid Graded Rings
Öinert, Johan; Lundström, Patrik (2012). The Ideal Intersection Property for Groupoid Graded Rings. Communications in Algebra, 40, (5), 1860 - 1871
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Published
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English
Authors:
Öinert, Johan
;
Lundström, Patrik
Department:
Non-commutative Geometry-lup-obsolete
Research Group:
Non-commutative Geometry-lup-obsolete
Abstract:
We show that, if a groupoid graded ring has a grading satisfying a certain nondegeneracy property, then the commutant of the center of the principal component of the ring has the ideal intersection property, that is it intersects nontrivially every nonzero ideal of the ring. Furthermore, we show that for skew groupoid algebras with commutative principal component, the principal component is maximal commutative if and only if it has the ideal intersection property.
Keywords:
Commutants ;
Graded rings ;
Ideals ;
Maximal commutative subrings ;
Skew groupoid rings
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