scientific article; zbMATH DE number 837793

Publication date: 1 March 1998

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

characteristic function Krein space nodes Schur algorithm invariant subspace problem Schur class analytic kernels selfadjoint extension defect operator operator colligations Julia operator Bognár-Krámli factorization contractive completion problem unitary operator extension

Mathematics Subject Classification ID

Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Invariant subspaces of linear operators (47A15) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) Dilations, extensions, compressions of linear operators (47A20) Spaces with indefinite inner product (Kre?n spaces, Pontryagin spaces, etc.) (46C20) Research exposition (monographs, survey articles) pertaining to functional analysis (46-02) Research exposition (monographs, survey articles) pertaining to operator theory (47-02) Linear operators on spaces with an indefinite metric (47B50) Operator colligations (= nodes), vessels, linear systems, characteristic functions, realizations, etc. (47A48)

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