Certain Norm Related Quantities of Unbounded Linear Operators

DOI10.1002/mana.19921570111zbMath0785.47002OpenAlexW1972689157MaRDI QIDQ4024477

Louis E. Labuschagne

Publication date: 20 April 1993

Published in: Mathematische Nachrichten (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1002/mana.19921570111

zbMATH Keywords

continuitylinear operatorsprecompactnessnorm related quantities of unbounded linear operators

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) General (adjoints, conjugates, products, inverses, domains, ranges, etc.) (47A05)

Related Items (4)

THE UNIQUENESS OF OPERATIONAL QUANTITIES IN VON NEUMANN ALGEBRAS ⋮ UBIQUITOUS PROPERTIES OF CERTAIN OPERATIONAL QUANTITIES OF LINEAR RELATIONS IN NORMED SPACES ⋮ On essential spectra of linear relations and quotient indecompos- able normed spaces ⋮ FACTORIZATION OF UNBOUNDED THIN AND COTHIN OPERATORS

Cites Work

• Partially continuous and semicontinuous linear operators in normed spaces
• Perturbation theory for nullity, deficiency and other quantities of linear operators
• Properties of some norm related functions of unbounded linear operators
• Semigroups of operators and measures of noncompactness
• Geometric characteristic of semi-Fredholm operators and their asymptotic behaviour
• The basic propositions on defect numbers, root numbers and indices of linear operators
• Some continuity properties of linear transformations in normed spaces
• Characterisations of partially continuous, strictly cosingular and φ- type operators
• Strictly Singular Operators and Their Conjugates
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