Metric constrained interpolation, commutant lifting, and systems
著者
書誌事項
Metric constrained interpolation, commutant lifting, and systems
（Operator theory : advances and applications, v. 100）
Birkhäuser, c1998
- : Basel
- : Boston
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注記
Includes bibliographical references and index
内容説明・目次
内容説明
This monograph combines the commutant lifting theorem for operator theory and the state space method from system theory to provide a unified approach for solving both stationary and nonstationary interpolation problems with norm constraints. Included are the operator-valued versions of tangential Nevanlinna-Pick problem, the Hermite-Fejer problem, the Nehari problem, the Sarason problem, and the two-sided Nudelman problem, adn their nonstationary analogues. The main results concern the existance of solutions, the explicit construction of the central solutions in state space form, the maximum entropy property of the central solutions, and state space parametrizations of all solutions. Direct connections between the various interpolations problems are displayed. Application to the H-infinity control problems are presented. This monograph should appeal to a wide group of mathematicians and engineers. The material is self-contained and may be used for advanced graduate courses and seminars.
目次
- Part 1 Interpolation and time-invariant system: interpolation problems for time-valued functions
- proofs using the commutant lifting theorem
- time invariant systems
- central commutant lifting
- central state space solutions
- parametization of intertwinning and its applications
- applications to control systems. Part 2 Nonstationary interpolation and time-varying systems
- nonstationary interpolation theorems
- nonstationary systems and point evaluation
- reduction techniques - from nonstationary to stationary and vice versa
- proofs of the nonstationary interpolation theorems by reduction to the stationary case
- a general completion theorem
- applications of the three chains completion theorem to interpolation
- parameterization of all solutions of the three chains completion problem.
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