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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)

Unitary parts of contractive Hankel matrices


Author: Jeffrey R. Butz
Journal: Proc. Amer. Math. Soc. 66 (1977), 91-94
MSC: Primary 47B35
MathSciNet review: 0461194
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Abstract: For a Hankel matrix $ H = ({c_{j + k}})$ which is a contraction, necessary and sufficient conditions are obtained for the existence of a nontrivial unitary part, and an explicit description of this unitary part is given.


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Additional Information

DOI: http://dx.doi.org/10.1090/S0002-9939-1977-0461194-2
PII: S 0002-9939(1977)0461194-2
Article copyright: © Copyright 1977 American Mathematical Society