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The graded classification conjectures hold for various finite representations of Leavitt path algebras
Linnaeus University, Faculty of Technology, Department of Mathematics.ORCID iD: 0000-0002-8400-0416
Western Sydney University, Australia.
Central Visayan Institute Foundation, Philippines.
2025 (English)In: Journal of Algebra, ISSN 0021-8693, E-ISSN 1090-266X, Vol. 672, p. 303-333Article in journal (Refereed) Published
Abstract [en]

The Graded Classification Conjecture states that for finite directed graphs E and F, the associated Leavitt path algebras Lk(E) and Lk(F) are graded Morita equivalent, i.e., Gr-Lk(E) approximate to gr Gr-Lk(F), if and only if, their graded Grothendieck groups are isomorphic K0gr(Lk(E)) congruent to K0gr(Lk(F)) as order-preserving Z[x,x-1]-modules. Furthermore, if under this isomorphism, the class [Lk(E)] is sent to [Lk(F)] then the algebras are graded isomorphic, i.e., Lk(E) congruent to gr Lk(F). In this note we show that, for finite graphs E and F with no sinks and sources, an order-preserving Z[x,x-1]-module isomorphism K0gr(Lk(E)) congruent to K0gr(Lk(F)) gives that the categories of locally finite dimensional graded modules of Lk(E) and Lk(F) are equivalent, i.e., grZ-Lk(E) approximate to grgrZ-Lk(F). We further obtain that the category of finite dimensional (graded) modules is equivalent, i.e., mod- Lk(E) approximate to mod Lk(F) and gr-Lk(E) approximate to gr gr-Lk(F).

Place, publisher, year, edition, pages
Elsevier BV , 2025. Vol. 672, p. 303-333
Keywords [en]
Leavitt path algebra, Graded Morita equivalence, Hazrat conjecture
National Category
Algebra and Logic
Research subject
Natural Science, Mathematics
Identifiers
URN: urn:nbn:se:lnu:diva-137840DOI: 10.1016/j.jalgebra.2025.02.035ISI: 001448567700001Scopus ID: 2-s2.0-86000667647OAI: oai:DiVA.org:lnu-137840DiVA, id: diva2:1950945
Available from: 2025-04-09 Created: 2025-04-09 Last updated: 2025-04-22Bibliographically approved

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Bock, Wolfgang

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