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All solutions to the relaxed commutant lifting problem

2006; Birkhäuser; Volume: 72; Linguagem: Inglês

2064-8316

A. E. Frazho, S. ter Horst, M. A. Kaashoek,

Algebraic and Geometric Analysis

A new description is given of all solutions to the relaxed commutant lifting problem. The method of proof is also different from earlier ones, and uses only an operator-valued version of a classical lemma on harmonic majorants. AMS Subject Classification (2000): Primary 47A20, 47A57; Secondary 31A05, 47A56.