A note on compact normal operators

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摘要

In this note, we present three simple necessary and sufficient conditions for a linear compact operator on a Hilbert space H to be normal.

论文关键词：47A10,Eigenvalue,Singular value,Compact operator,Normal operator

论文评审过程：Received 21 January 2002, Revised 20 May 2002, Available online 6 December 2002.

论文官网地址：https://doi.org/10.1016/S0377-0427(02)00748-3