Perturbation theory of lower semi-Browder multivalued linear operators

被引：33

作者：

Fakhfakh, Fatma ^{[1
]}

Mnif, Maher ^{[1
]}

机构：

[1] Univ Sfax, Dept Math, Fac Sci Sfax, Sfax 3000, Tunisia

来源：

PUBLICATIONES MATHEMATICAE-DEBRECEN | 2011年 / 78卷 / 3-4期

关键词：

semi-Fedholm linear relations; lower semi-Browder linear relations and Browder's essential defect spectrum; DESCENT; ASCENT; STABILITY; DEFECT;

D O I：

10.5486/PMD.2011.4799

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

in the present paper we introduce the notion of lower semi-Browder linear relation and we study the perturbation problem under compact operator perturbations.

引用

页码：595 / 606

页数：12

共 25 条

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