The hom-associative Weyl algebras in prime characteristic

Year 2022, Volume: 31 Issue: 31, 203 - 229, 17.01.2022

Per Back Johan Rıchter

https://doi.org/10.24330/ieja.1058430

Abstract

We introduce the first hom-associative Weyl algebras over a field of prime characteristic as a generalization of the first associative Weyl algebra in prime characteristic. First, we study properties of hom-associative algebras constructed from associative algebras by a general ``twisting'' procedure. Then, with the help of these results, we determine the commuter, center, nuclei, and set of derivations of the first hom-associative Weyl algebras. We also classify them up to isomorphism, and show, among other things, that all nonzero endomorphisms on them are injective, but not surjective. Last, we show that they can be described as a multi-parameter formal hom-associative deformation of the first associative Weyl algebra, and that this deformation induces a multi-parameter formal hom-Lie deformation of the corresponding Lie algebra, when using the commutator as bracket.

Keywords

Hom-associative Ore extension, hom-associative Weyl algebra, formal multi-parameter hom-associative deformation, formal multi-parameter hom-Lie deformation

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