English

Schur multiplier norms for Loewner matrices

Functional Analysis 2014-10-24 v1

Abstract

We study upper bounds on the Schur multiplier norm of Loewner matrices for concave and convex functions. These bounds then immediately lead to upper bounds on the ratio of Schatten qq-norms of commutators   [A,f(B)]  q/  [A,B]  q||\;[A,f(B)]\;||_q/||\;[A,B]\;||_q. We also consider operator monotone functions, for which sharper bounds are obtained.

Keywords

Cite

@article{arxiv.1303.7365,
  title  = {Schur multiplier norms for Loewner matrices},
  author = {Koenraad M. R. Audenaert},
  journal= {arXiv preprint arXiv:1303.7365},
  year   = {2014}
}

Comments

13 pages

R2 v1 2026-06-21T23:50:13.376Z