Journal
INDIANA UNIVERSITY MATHEMATICS JOURNAL
Volume 62, Issue 5, Pages 1587-1620Publisher
INDIANA UNIV MATH JOURNAL
DOI: 10.1512/iumj.2013.62.5123
Keywords
Graph C*-algebras; Leavitt path algebras; graph algebras; classification; K-theory
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Funding
- Simons Foundation [210035]
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We introduce a notion of ideal-related K-theory for rings, and use it to prove that if two complex Leavitt path algebras L-C (E) and L-C (F) are Morita equivalent (respectively, isomorphic), then the ideal-related K-theories (respectively, the unital ideal-related K-theories) of the corresponding graph C*-algebras C* (E) and C* (F) are isomorphic. This has consequences for the Morita equivalence conjecture and isomorphism conjecture for graph algebras, and allows us to prove that when E and F belong to specific collections of graphs whose C*-algebras are classified by ideal-related K-theory, Morita equivalence (respectively, isomorphism) of the Leavitt path algebras L-C (E) and L-C (F) implies strong Morita equivalence (respectively, isomorphism) of the graph C*-algebras C* (E) and C* (F). We state a number of corollaries that describe various classes of graphs where these implications hold. In addition, we conclude with a classification of Leavitt path algebras of amplified graphs similar to the existing classification for graph C*-algebras of amplified graphs.
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