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arxiv: 1205.0893 · v1 · pith:GPOOV4ETnew · submitted 2012-05-04 · 🧮 math.QA · math.RA

Twisted Calabi-Yau property of Ore extensions

classification 🧮 math.QA math.RA
keywords calabi-yautwistedautomorphismsdimensionnakayamasigmaalgebrasapplication
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Suppose that $E=A[x;\sigma,\delta]$ is an Ore extension with $\sigma$ an automorphism. It is proved that if $A$ is twisted Calabi-Yau of dimension $d$, then $E$ is twisted Calabi-Yau of dimension $d+1$. The relation between their Nakayama automorphisms is also studied. As an application, the Nakayama automorphisms of a class of 5-dimensional Artin-Schelter regular algebras are given explicitly.

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