An Introduction to Models and Decompositions in Operator Theory - Rilegato

Kubrusly, Carlos S.

Rilegato

ISBN 10: 0817639926 ISBN 13: 9780817639921

Casa editrice: Springer Basel AG, 1997

Riassunto

Decompositions and models for Hilbert-space operators have been active research topics in recent years, and this book is intended as an introduction to this area of operator theory, working from an abstract point of view. The approach is elementary in that all the proofs only use standard results of single operator thoery, although many of the questions posed in the text lead on to open problems.

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Contenuti

0. Preliminaries.- 0.1. Hilbert-Space Operators.- 0.2. Spectrum of an Operator.- 0.3. Convergence and Stability.- 0.4. Projections and Isometries.- 0.5. Invariant Subspaces.- 0.6. Spectral Theorem.- 1. Equivalence.- 1.1. Parts.- 1.2. Norms.- 2. Shifts.- 2.1. Unilateral Shifts.- 2.2. Bilateral Shifts.- 3. Contractions.- 3.1. The Strong Limits of {T*nTn} and {TnT*n}.- 3.2. The Isometry V on R(A)-.- 4. Quasisimilarity.- 4.1. Invariant Subspaces.- 4.2. Hyperinvariant Subspaces.- 4.3. Contractions Quasisimilar to a Unitary Operator.- 5. Decompositions.- 5.1. Nagy-Foia?—Langer Decomposition.- 5.2. von Neumann-Wold Decomposition.- 5.3. A Decomposition for Contractions with A = A2.- 6. Models.- 6.1. Rota’s Model.- 6.2. de Branges-Rovnyak Refinement.- 6.3. Durszt Extension.- 7. Applications.- 7.1. A Pattern for Contractions.- 7.2. Foguel Decomposition.- 8. Similarity.- 8.1. Power Boundedness.- 8.2. Weak and Strong Stability.- References.

Product Description

Book by Kubrusly Carlos S Kubrusly C

Dettagli dell'edizione

• Editore: Springer Basel AG
• Data di pubblicazione: 1997
• Lingua: Inglese
• ISBN 10: 0817639926
• ISBN 13: 9780817639921
• Rilegatura: Copertina rigida
• Numero di pagine: 148
• Contatto del produttore: ProductSafety@springernature.com; ProductSafety@springernature.com; ; Poststr. 9; Darmstadt; 64293; Germania