Super-cocharacters,star-cocharacters and multiplicities bounded by one |
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Authors: | A Giambruno S Mishchenko |
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Institution: | (1) Dipartimento di Matematica e Applicazioni, Università di Palermo, Via Archirafi 34, 90123 Palermo, Italy;(2) Department of Algebra and Geometric Computations, Ulyanovsk State University, 432970 Ulyanovsk, Russia |
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Abstract: | Let A be an algebra over a field of characteristic zero with an additional structure of superalgebra or algebra with involution.
The ordinary representation theory of the hyperoctahedral group is exploited in order to study the super-identities or the star-identities of A. One associates to A a sequence -characters and one of the main objective of the theory is to determine their decomposition into irreducibles. Here we classify
the super-identities and the star-identities in case the corresponding multiplicities are bounded by one. This is strictly
related to the varieties of algebras whose lattice of subvarieties is distributive.
A. Giambruno was partially supported by MIUR of Italy. S. Mishchenko was partially supported by RFBR grant 07-01-00080. |
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Keywords: | Mathematics Subject Classification (2000)" target="_blank">Mathematics Subject Classification (2000) Primary 16R10 16W10 16W55 Secondary 20C30 |
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