[HTML][HTML] Resolution quiver and cyclic homology criteria for Nakayama algebras

EJ Hanson, K Igusa - Journal of algebra, 2020 - Elsevier
Journal of algebra, 2020Elsevier
If a Nakayama algebra is not cyclic, it has finite global dimension. For a cyclic Nakayama
algebra, there are many characterizations of when it has finite global dimension. In [17],
Shen gave such a characterization using Ringel's resolution quiver. In [11], the second
author, with Zacharia, gave a cyclic homology characterization for when a monomial relation
algebra has finite global dimension. We show directly that these criteria are equivalent for all
Nakayama algebras. Our comparison result also reproves both characterizations. In a …
Abstract
If a Nakayama algebra is not cyclic, it has finite global dimension. For a cyclic Nakayama algebra, there are many characterizations of when it has finite global dimension. In [17], Shen gave such a characterization using Ringel's resolution quiver. In [11], the second author, with Zacharia, gave a cyclic homology characterization for when a monomial relation algebra has finite global dimension. We show directly that these criteria are equivalent for all Nakayama algebras. Our comparison result also reproves both characterizations. In a separate paper we discuss an interesting example that came up in our attempt to generalize this comparison result to arbitrary monomial relation algebras [8].
Elsevier
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