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arxiv 1606.07998 v1 pith:P6IAPRJU submitted 2016-06-26 math.RA

Cohn-Leavitt Path Algebras and the Invariant Basis Number Property

classification math.RA
keywords pathalgebracohn-leavittseparatedalgebrasconditioncornerfinite
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We give the necessary and sufficient condition for a separated Cohn-Leavitt path algebra of a finite digraph to have IBN. As a consequence, separated Cohn path algebras have IBN. We determine the non-stable K-theory of a corner ring in terms of the non-stable K-theory of the ambient ring. We give a necessary condition for a corner algebra of a separated Cohn-Leavitt path algebra of a finite graph to have IBN. We provide Morita equivalent rings which are non-IBN, but are of different types.

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