Towards a K-theoretic characterization of graded isomorphisms between Leavitt path algebras

Abstract

Hazrat gave a K-theoretic invariant for Leavitt path algebras as graded algebras. Hazrat conjectured that this invariant classifies Leavitt path algebras up to graded isomorphism, and proved the conjecture in some cases. In this paper, we prove that a weak version of the conjecture holds for all finite essential graphs.

Final version, to appear in Journal of K-Theory. arXiv admin note: text overlap with arXiv:0802.1198 by other authors