6533b7d2fe1ef96bd125ed16

RESEARCH PRODUCT

Group-graded algebras with polynomial identity

Antonio GiambrunoDavid M. RileyYuri Bahturin

subject

CombinatoricsFiltered algebraSymmetric algebraIncidence algebraGeneral MathematicsAssociative algebraDivision algebraAlgebra representationCellular algebraComposition algebraMathematics

description

LetG be a finite group and letR=Σg∈GRg be any associative algebra over a field such that the subspacesRg satisfyRgRh⊆Rgh. We prove that ifR1 satisfies a PI of degreed, thenR satisfies a PI of degree bounded by an explicit function ofd and the order ofG. This result implies the following: ifH is a finite-dimensional semisimple commutative Hopfalgebra andR is anyH-module algebra withRH satisfying a PI of degreed, thenR satisfies a PI of degree bounded by an explicit function ofd and the dimension ofH.

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