Characterization of Closed Densely Defined Semi-Browder Linear Operators

被引：4
|
作者：
Alvarez, Teresa [1 ]
Fakhfakh, Fatma [2 ]
Mnif, Maher [2 ]
机构：
[1] Univ Oviedo, Dept Math, Oviedo 33007, Asturias, Spain
[2] Univ Sfax, Fac Sci Sfax, Dept Math, Sfax 3000, Tunisia
来源：
COMPLEX ANALYSIS AND OPERATOR THEORY | 2013年 / 7卷 / 06期
关键词：
Semi-Fredholm operators; Semi-Browder operators; Browder's essential defect; Approximate point spectrum; DESCENT; ASCENT; DEFECT;
D O I：
10.1007/s11785-012-0238-6
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In the present paper we characterize the closed densely defined semi-Browder operators through the Kato decomposition. Furthermore, we apply the obtained results to give a new characterization of Browder's essential defect spectrum and Browder's essential approximate point spectrum under finite rank operator perturbations.
引用
收藏
页码：1775 / 1786
页数：12
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