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Specht property for the algebra of upper triangular matrices of size two with a Taft’s algebra action

Published online by Cambridge University Press:  16 May 2022

Lucio Centrone*
Affiliation:
Dipartimento di Matematica, Università degli Studi di Bari “Aldo Moro”, via E. Orabona 4, Bari, 70125, Italy
Alejandro Estrada
Affiliation:
IMECC, UNICAMP, Rua Sérgio Buarque de Holanda 651, 13083-859 Campinas, SP, Brazil e-mail: a227983@dac.unicamp.br

Abstract

Let F be a field of characteristic zero, and let $UT_2$ be the algebra of $2 \times 2$ upper triangular matrices over F. In a previous paper by Centrone and Yasumura, the authors give a description of the action of Taft’s algebras $H_m$ on $UT_2$ and its $H_m$ -identities. In this paper, we give a complete description of the space of multilinear $H_m$ -identities in the language of Young diagrams through the representation theory of the hyperoctahedral group. We finally prove that the variety of $H_m$ -module algebras generated by $UT_2$ has the Specht property, i.e., every $T^{H_m}$ -ideal containing the $H_m$ -identities of $UT_2$ is finitely based.

Type
Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of The Canadian Mathematical Society

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Footnotes

A. Estrada was partially supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001.

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