English

Generalized numerical radius and related inequalities

Functional Analysis 2020-06-29 v3

Abstract

They proved several properties and introduced some inequalities. We continue with the study of this generalized numerical radius and we develop diverse inequalities involving w_N. We also study particular cases with a fixed N(.), for instance the p-Schatten norms. In ["A generalization of the numerical radius". Linear Algebra Appl. 569 (2019)], Abu Omar and Kittaneh defined a new generalization of the numerical radius. That is, given a norm N()N(\cdot) on \bh\bh, the space of bounded linear operators over a Hilbert space H, and A in B(H) w_N(A)=sup_{\theta\in \R}N(Re(e^{i\theta}A)). They proved several properties and introduced some inequalities. We continue with the study of this generalized numerical radius and we develop diverse inequalities involving wNw_N. We also study particular cases when N(.) is the p- Schatten norm with p>1.

Keywords

Cite

@article{arxiv.1909.09243,
  title  = {Generalized numerical radius and related inequalities},
  author = {Tamara Bottazzi and Cristian Conde},
  journal= {arXiv preprint arXiv:1909.09243},
  year   = {2020}
}

Comments

17 pages

R2 v1 2026-06-23T11:20:48.061Z