English

What about A,B if AB-BA and A commute

Rings and Algebras 2011-03-23 v1

Abstract

Let A,B be complex n,n complex matrices such that AB-BA and A commute. We show that, if n=2 then A,B are simultaneously triangularizable and if n>=3 then there exists such a couple A,B such that the pair (A,B) has not property L of Motzkin-Taussky and such that B and C are not simultaneously triangularizable.

Cite

@article{arxiv.1103.4200,
  title  = {What about A,B if AB-BA and A commute},
  author = {Gerald Bourgeois},
  journal= {arXiv preprint arXiv:1103.4200},
  year   = {2011}
}

Comments

3 pages

R2 v1 2026-06-21T17:42:45.785Z