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An Azumaya Algebra Version of the Kneser–Tits Problem for Groups of TypeD4

Authors :
David Saltman
Yoav Segev
Louis Rowen
Uzi Vishne
Source :
Communications in Algebra. 39:133-152
Publication Year :
2010
Publisher :
Informa UK Limited, 2010.

Abstract

We solve the following problem related to the Kneser–Tits conjecture, for Azumaya algebras. Given an Azumaya algebra D of rank 4 that is not a division algebra, whose center K is three-dimensional over the ground field F, such that cor K/F D is trivial, is it true that every element of D having reduced norm in F is a product of n elements having both reduced norm and reduced trace in F? This is true for n ≥ 3, but false for n = 2.

Details

ISSN :
15324125 and 00927872
Volume :
39
Database :
OpenAIRE
Journal :
Communications in Algebra
Accession number :
edsair.doi...........e3435fe7f9ca292b2ce16d614dbbcdab
Full Text :
https://doi.org/10.1080/00927870903447221