English

On the Russo-Dye Theorem for positive linear maps

Functional Analysis 2019-11-26 v1

Abstract

We revisit a classical result, the Russo-Dye Theorem, stating that every positive linear map attains its norm at the identity.

Cite

@article{arxiv.1911.10573,
  title  = {On the Russo-Dye Theorem for positive linear maps},
  author = {Jean-Christophe Bourin and Eun-Young Lee},
  journal= {arXiv preprint arXiv:1911.10573},
  year   = {2019}
}
R2 v1 2026-06-23T12:25:37.916Z