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math.RA2020
Superinvolutions on block-triangular matrix algebras
Laise Dias, Diogo Diniz, Alex Ramos
In this paper we classify, up to isomorphism, the superinvolutions on algebras of upper block-triangular matrices over an algebraically closed field of characteristic different fro…
math.RA2020
Graded identities with involution for the algebra of upper triangular matrices
Diogo Diniz, Alex Ramos
Let be a field of characteristic zero. We prove that if a group grading on admits a graded involution then this grading is a coarsening of a $\mathbb{Z}^{\lfloor\frac…