Numerical range of a linear relation and maximal relations

DOI10.1007/BF01101255zbMath0714.47003MaRDI QIDQ750844

F. S. Rofe-Beketov

Publication date: 1990

Published in: Journal of Soviet Mathematics (Search for Journal in Brave)

zbMATH Keywords

m-sectional relationsnecessary and sufficient conditions for a linear relation to be K- maximal

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12) General (adjoints, conjugates, products, inverses, domains, ranges, etc.) (47A05) Other classical set theory (including functions, relations, and set algebra) (03E20)

Related Items (4)

Shorting, parallel addition and form sums of nonnegative selfadjoint linear relations ⋮ A Class of Sectorial Relations and the Associated Closed Forms ⋮ Factorized sectorial relations, their maximal-sectorial extensions, and form sums ⋮ A matrix formula for Schur complements of nonnegative selfadjoint linear relations

Cites Work

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• Positive selfadjoint extensions of positive symmetric subspaces

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