On sums of hankel operators

Paul A. Fuhrmann

doi:10.1090/S0002-9939-1974-0353043-5

On sums of hankel operators

Paul A. Fuhrmann

Department of Mathematics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Necessary and sufficient conditions are derived for the sum of two Hankel operators of closed range to have closed range. As a corollary we determine when two left invariant subspaces of H have positive angle.

Original language	English
Pages (from-to)	65-68
Number of pages	4
Journal	Proceedings of the American Mathematical Society
Volume	46
Issue number	1
DOIs	https://doi.org/10.1090/S0002-9939-1974-0353043-5
State	Published - 1 Jan 1974

Keywords

Closed range
Hankel operators
Inner functions
Invariant subspaces

ASJC Scopus subject areas

General Mathematics
Applied Mathematics

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10.1090/S0002-9939-1974-0353043-5

Cite this

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abstract = "Necessary and sufficient conditions are derived for the sum of two Hankel operators of closed range to have closed range. As a corollary we determine when two left invariant subspaces of H have positive angle.",

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KW - Closed range

KW - Hankel operators

KW - Inner functions

KW - Invariant subspaces

UR - https://www.scopus.com/pages/publications/84966261819

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On sums of hankel operators

Abstract

Keywords

ASJC Scopus subject areas

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