A unitary analogue of Kato's theorem on variation of discrete spectra
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Publication:1111141
DOI10.1007/BF00398588zbMath0658.47008MaRDI QIDQ1111141
Rajendra Bhatia, Kalayan B. Sinha
Publication date: 1988
Published in: Letters in Mathematical Physics (Search for Journal in Brave)
compact operatorestimate of the distance between extended enumerations of the discrete spectra of two unitary operators whose difference is compactsingular values of the difference
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