English

Extended Rako\v{c}evi\'{c}'s property

Functional Analysis 2020-07-24 v1

Abstract

The purpose of this paper is to introduce and study new extension of Rako\v{c}evi\'{c}'s property (w)(w) and property (b)(b) introduced by Berkani--Zariouh in \cite{berkani-zariouh1}, in connection with other Weyl type theorems and recent properties. We prove in particular, the two following results: 1. A bounded linear operator TT satisfies property (wπ00)(w_{\pi_{00}}) if and only if TT satisfies property (w)(w) and σuf(T)=σuw(T).\sigma_{uf}(T)=\sigma_{uw}(T). 2. TT satisfies property (gwπ00)(gw_{\pi_{00}}) if and only if TT satisfies property (wπ00)(w_{\pi_{00}}) and π0(T)=p0a(T).\pi_{0}(T)=p_{0}^a(T). Classes of operators are considered as illustrating examples.

Cite

@article{arxiv.2007.11710,
  title  = {Extended Rako\v{c}evi\'{c}'s property},
  author = {kaoutar Ben Ouidren and Hassan Zariouh},
  journal= {arXiv preprint arXiv:2007.11710},
  year   = {2020}
}
R2 v1 2026-06-23T17:19:52.616Z