The socle of a Leavitt path algebra

Details The socle of a Leavitt path algebra The socle of a Leavitt path algebra

2007-01-23

arxiv.org/abs/math/0701637v1

Mathematics

Rings and Algebras

13 pgs

Scientific paper

In this paper we characterize the minimal left ideals of a Leavitt path algebra as those ones which are isomorphic to principal left ideals generated by line point vertices, that is, by vertices whose trees do not contain neither bifurcations nor closed paths. Moreover, we show that the socle of a Leavitt path algebra is the two-sided ideal generated by these line point vertices. This characterization allows us to compute the socle of some algebras that arise as the Leavitt path algebra of some row-finite graphs. A complete description of the socle of a Leavitt path algebra is given: it is a locally matricial algebra.

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