The Gelfand-Kirillov dimension of quadratic algebras satisfying the cyclic condition

Author:

Cedó Ferran,Jespers Eric,Okniński Jan

Abstract

We consider algebras over a field K K presented by generators x 1 , , x_1,\dots , x n x_n and subject to ( n 2 ) n\choose 2 square-free relations of the form x i x j = x k x l x_{i}x_{j}=x_{k}x_{l} with every monomial x i x j , i j x_{i}x_{j}, i\neq j , appearing in one of the relations. It is shown that for n > 1 n>1 the Gelfand-Kirillov dimension of such an algebra is at least two if the algebra satisfies the so-called cyclic condition. It is known that this dimension is an integer not exceeding n n . For n 4 n\geq 4 , we construct a family of examples of Gelfand-Kirillov dimension two. We prove that an algebra with the cyclic condition with generators x 1 , , x n x_1,\dots ,x_n has Gelfand-Kirillov dimension n n if and only if it is of I I -type, and this occurs if and only if the multiplicative submonoid generated by x 1 , , x n x_1,\dots ,x_n is cancellative.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Reference8 articles.

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