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- W3021371512 abstract "We note that the deep results of Grunewald and Segal on algorithmic problems for arithmetic groups imply the decidability of several matrix equivalence problems involving poset-blocked matrices over Z (the integers). Consequently, results of Eilers, Restorff, Ruiz and Sørensen imply that isomorphism and stable isomorphism of unital graph C*-algebras (including the Cuntz-Krieger algebras) are decidable. One can also decide flow equivalence for shifts of finite type and isomorphism of Z-quiver representations (i.e., finite diagrams of homomorphisms of finitely generated abelian groups)." @default.
- W3021371512 created "2020-05-13" @default.
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- W3021371512 date "2023-09-21" @default.
- W3021371512 modified "2023-10-09" @default.
- W3021371512 title "Decidability of flow equivalence and isomorphism problems for graph C*-algebras and quiver representations" @default.
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- W3021371512 doi "https://doi.org/10.1090/proc/15148" @default.
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