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Proceedings of the American Mathematical Society

ISSN 1088-6826(online) ISSN 0002-9939(print)

 

 

Isolated points of the spectra of conservative matrices


Author: N. K. Sharma
Journal: Proc. Amer. Math. Soc. 51 (1975), 74-78
MSC: Primary 40C05; Secondary 15A18
DOI: https://doi.org/10.1090/S0002-9939-1975-0372461-3
MathSciNet review: 0372461
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Abstract: We show that the only possible isolated points in the spectrum of a conservative triangular matrix are its diagonal elements, and that any Hausdorff method corresponding to an absolutely continuous mass function is in the norm closure of the analytic methods.


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DOI: https://doi.org/10.1090/S0002-9939-1975-0372461-3
Article copyright: © Copyright 1975 American Mathematical Society