Z3×Z3 crossed products

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Abstract

Let A be the generic abelian crossed product with respect to Z3×Z3. In this note we show that A is similar to the tensor product of 4 symbol algebras (3 of degree 9 and one of degree 3) and if A is of exponent 3 it is similar to the product of 31 symbol algebras of degree 3. We then use [9] to prove that if A is any algebra of degree 9 then A is similar to the product of 35. 840 symbol algebras (8960 of degree 3 and 26. 880 of degree 9) and if A is of exponent 3 it is similar to the product of 277. 760 symbol algebras of degree 3. We then show that the essential 3-dimension of the class of A is at most 6.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Algebra
Volume418
DOIs
StatePublished - 15 Nov 2014

Bibliographical note

Funding Information:
This work was supported by the United States-Israel Binational Science Foundation (Grant No. 2010149 ).

Funding

This work was supported by the United States-Israel Binational Science Foundation (Grant No. 2010149 ).

FundersFunder number
United States-Israel Binational Science Foundation2010149

    Keywords

    • Abelian crossed products
    • Brauer group
    • Division algebras

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