On Subscalarity of Some 2 × 2 M-Hyponormal Operator Matrices

We provide some conditions for 2×2 operator matrices whose diagonal entries are M-hyponormal operators to be subscalar. As a consequence, we obtain that Weyl type theorem holds for such operator matrices.

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Bibliographic Details
Main Authors: Fei Zuo, Junli Shen
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2014/461567
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