Djordjević, S. V.; Zguitti, H. Essential point spectra of operator matrices trough local spectral theory. (English) Zbl 1148.47004 J. Math. Anal. Appl. 338, No. 1, 285-291 (2008). Reviewer: Manuel González (Santander) MSC: 47A10 47A11 PDF BibTeX XML Cite \textit{S. V. Djordjević} and \textit{H. Zguitti}, J. Math. Anal. Appl. 338, No. 1, 285--291 (2008; Zbl 1148.47004) Full Text: DOI
Zerouali, El Hassan; Zguitti, Hassane Perturbation of spectra of operator matrices and local spectral theory. (English) Zbl 1105.47006 J. Math. Anal. Appl. 324, No. 2, 992-1005 (2006). Reviewer: Bilender P. Allahverdiev (Isparta) MSC: 47A11 47A55 47A10 PDF BibTeX XML Cite \textit{E. H. Zerouali} and \textit{H. Zguitti}, J. Math. Anal. Appl. 324, No. 2, 992--1005 (2006; Zbl 1105.47006) Full Text: DOI
Zguitti, H. A note on generalized Weyl’s theorem. (English) Zbl 1101.47002 J. Math. Anal. Appl. 316, No. 1, 373-381 (2006). Reviewer: Mohamed Zohry (Tétouan) MSC: 47A10 47A53 47B20 PDF BibTeX XML Cite \textit{H. Zguitti}, J. Math. Anal. Appl. 316, No. 1, 373--381 (2006; Zbl 1101.47002) Full Text: DOI