Truncation Method for Operators with Disconnected Essential Spectrum

Proceedings Mathematical Sciences

M N N Namboodiri¹ 

[1] Department of Mathematics, Cochin University of Science and Technology, Cochin 0, India$$

关键词: Operator;    singular values;    spectrum.;   

DOI  :  

学科分类：数学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

In this short paper, the usage of truncation method to get information about essential spectrum of bounded as well as semi-bounded linear operators on separable Hilbert spaces, is investigated. In addition to this, the problem of predicting the gaps in the essential spectrum of self-adjoint operators, linear algebraically is also considered.

【 授权许可】

Unknown