English

Jordan maps and zero Lie product determined algebras

Rings and Algebras 2022-09-28 v1

Abstract

Let AA be an algebra over a field FF with {\rm char}(F)2(F)\ne 2. If AA is generated as an algebra by [[A,A],[A,A]][[A,A],[A,A]], then for every skew-symmetric bilinear map Φ:A×AX\Phi:A\times A\to X, where XX is an arbitrary vector space over FF, the condition that Φ(x2,x)=0\Phi(x^2,x)=0 for all xAx\in A implies that Φ(xy,z)+Φ(zx,y)+Φ(yz,x)=0\Phi(xy,z) +\Phi(zx,y) + \Phi(yz,x)=0 for all x,y,zAx,y,z\in A. This is applicable to the question of whether AA is zero Lie product determined, and is also used in proving that a Jordan homomorphism from AA onto a semiprime algebra BB is the sum of a homomorphism and an antihomomorphism.

Keywords

Cite

@article{arxiv.2209.13201,
  title  = {Jordan maps and zero Lie product determined algebras},
  author = {Matej Brešar},
  journal= {arXiv preprint arXiv:2209.13201},
  year   = {2022}
}