A CHARACTERIZATION OF SCHECHTER'S ESSENTIAL SPECTRUM BY MEAN OF MEASURE OF NON-STRICT-SINGULARITY AND APPLICATION TO MATRIX OPERATOR 被引量：1

A CHARACTERIZATION OF SCHECHTER'S ESSENTIAL SPECTRUM BY MEAN OF MEASURE OF NON-STRICT-SINGULARITY AND APPLICATION TO MATRIX OPERATOR

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摘要 In this paper we use the notion of measure of non-strict-singularity to give some results on Fredholm operators and we establish a fine description of the Schechter essential spectrum of a closed densely defined linear operator. In this paper we use the notion of measure of non-strict-singularity to give some results on Fredholm operators and we establish a fine description of the Schechter essential spectrum of a closed densely defined linear operator.

作者 Nedra Moalla

机构地区 Dpartement de Mathmatiques

出处《Acta Mathematica Scientia》 SCIE CSCD 2012年第6期2329-2340,共12页 数学物理学报（B辑英文版）

关键词 measure of non-strict-singularity Fredholm operator Schechter essentialspectrum matrix operator measure of non-strict-singularity Fredholm operator Schechter essentialspectrum matrix operator

分类号 O151.21 [理学—基础数学]

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3Jue Xian LI Department of Mathematics,Jilin University,Changchun 130023,P.R.China Department of Mathematics.Liaoning University.Shenyang 110036.P.R.China E-mail:Lixli@263.netYou Qing JI Shan Li SUN Departmerit of Mathematics.Jilin University,Changchun 130023.P.R.China.The Essential Spectrum and Banach Reducibility of Operator Weighted Shifts[J].Acta Mathematica Sinica,English Series,2001,17(3):413-424. 被引量：3
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2012年第6期

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A CHARACTERIZATION OF SCHECHTER'S ESSENTIAL SPECTRUM BY MEAN OF MEASURE OF NON-STRICT-SINGULARITY AND APPLICATION TO MATRIX OPERATOR 被引量：1

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