English

$\mathbb{Z}_3\times \mathbb{Z}_3$ crossed products

Rings and Algebras 2014-02-04 v1

Abstract

Let AA be the generic abelian crossed product with respect to Z3×Z3\mathbb{Z}_3\times \mathbb{Z}_3, in this note we show that AA is similar to the tensor product of 4 symbol algebras (3 of degree 9 and one of degree 3) and if AA is of exponent 33 it is similar to the product of 31 symbol algebras of degree 33. We then use \cite{RS} to prove that if AA is any algebra of degree 99 then AA is similar to the product of 3584035840 symbol algebras (89608960 of degree 33 and 2688026880 of degree 99) and if AA is of exponent 33 it is similar to the product of 277760277760 symbol algebras of degree 33. We then show that the essential 33-dimension of the class of AA is at most 66.

Cite

@article{arxiv.1402.0328,
  title  = {$\mathbb{Z}_3\times \mathbb{Z}_3$ crossed products},
  author = {Eliyahu Matzri},
  journal= {arXiv preprint arXiv:1402.0328},
  year   = {2014}
}
R2 v1 2026-06-22T02:59:44.126Z