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Compressions and Pinchings

Compressions and pinchings.
descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Jan 2002Embargo end date: 01 Jan 2002 France Publisher:arXiv
Authors: Bourin, Jean-Christophe;

doi: 10.48550/arxiv.math/0211358

arXiv: math/0211358

Compressions and Pinchings

Abstract

There exist operators $A$ such that : for any sequence of contractions $\{A_n\}$, there is a total sequence of mutually orthogonal projections $\{E_n\}$ such that $��E_nAE_n=\bigoplus A_n$.

11 pages

Country
France
Related Organizations
Keywords

Mathematics - Functional Analysis, 47A12, 47A12; 47A20, Numerical range, numerical radius, 47A20, FOS: Mathematics, Dilations, extensions, compressions of linear operators, numerical range, dilation, compression, Functional Analysis (math.FA)

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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