Some ultramatricial algebras which arise as intersections of Leavitt algebras

Authors: Gene Abrams, Phạm Ngọc Ánh,

https://doi.org/10.1142/S0219498802000227

Publisher, magazine: ,

Publication year: 2002

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Abstract

Two known constructions of rings R, each having the property that different sized matrix rings Mn(R) and Mm(R) are isomorphic but the free left R-modules RRn and RRm are not, are shown to be isomorphic. The first construction utilizes a direct limit, while the second involves an intersection process.

Tags: Ultramatricial rings; Leavitt algebras; C*-algebras; Cuntz algebra.