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Gradings, graded identities, *-identities and graded *-identities of an algebra of upper triangular matrices

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Autor(es):
Parada, Jonatan Andres Gomez ; Koshlukov, Plamen
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: Journal of Algebra; v. 674, p. 34-pg., 2025-07-15.
Resumo

Let K(X) be the free associative algebra freely generated over the field K by the countable set X = {x1,x2,...}. If A is an associative K-algebra, we say that a polynomial f (x1, ... , xn) E K(X) is a polynomial identity, or simply an identity in A if f (a1, ... , an) = 0 for every a1, ... , an E A. Consider A the subalgebra of UT3(K) given by: A = K(e1,1 + e3,3) Ke2,2 Ke2,3 Ke3,2 Ke1,3, where ei,j denote the matrix units. We investigate the gradings on the algebra A, determined by an abelian group, and prove that these gradings are elementary. Furthermore, we compute a basis for the Z2-graded identities of A, and also for the Z2-graded identities with graded involution. Moreover, we describe the cocharacters of this algebra. (c) 2025 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies. (AU)

Processo FAPESP: 18/23690-6 - Estruturas, representações e aplicações de sistemas algébricos
Beneficiário:Ivan Chestakov
Modalidade de apoio: Auxílio à Pesquisa - Temático