English

New solutions to the Hurwitz problem on square identities

Commutative Algebra 2011-03-15 v2 Number Theory Rings and Algebras

Abstract

The Hurwitz problem of composition of quadratic forms, or of "sum of squares identity" is tackled with the help of a particular class of (Z2)n(\mathbb{Z}_2)^n-graded non-associative algebras generalizing the octonions. This method provides an explicit formula for the classical Hurwitz-Radon identity and leads to new solutions in a neighborhood of the Hurwitz-Radon identity.

Keywords

Cite

@article{arxiv.1007.2337,
  title  = {New solutions to the Hurwitz problem on square identities},
  author = {Anna Lenzhen and Sophie Morier-Genoud and Valentin Ovsienko},
  journal= {arXiv preprint arXiv:1007.2337},
  year   = {2011}
}

Comments

13 pages, 2 figures, final version to appear in J. Pure Appl. Alg

R2 v1 2026-06-21T15:48:01.566Z