Finitely Presented Monoids and Algebras defined by Permutation Relations of Abelian Type

Details Finitely Presented Monoids and Algebras defined by Permutation Relations of Abelian Type Finitely Presented Monoids and Algebras defined by Permutation Relations of Abelian Type

2010-06-16

arxiv.org/abs/1006.3266v1

Mathematics

Rings and Algebras

15 pages

Scientific paper

The class of finitely presented algebras over a field K with a set of generators a_1,...,a_n and defined by homogeneous relations of the form a_1a_2...a_n = a_{sigma(1)}a_{sigma(2)}...a_{sigma(n)}, where sigma runs through an abelian subgroup H of Sym_{n}, the symmetric group, is considered. It is proved that the Jacobson radical of such algebras is zero. Also, it is characterized when the monoid S_n(H), with the "same" presentation as the algebra, is cancellative in terms of the stabilizer of 1 and the stabilizer of n in H. This work is a continuation of earlier work of Cedo, Jespers and Okninski.

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