scientific article

zbMath0989.47019MaRDI QIDQ2777859

Hassi, Seppo, Vladimir A. Derkach, Hendrik S. V. de Snoo

Publication date: 13 March 2002

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

zbMATH Keywords

singular perturbationSchur complementsWeyl functioncoupling methodsmatrix polynomialoperator modelPontryagin spacegeneralized Nevanlinna functionboundary tripletsymmetric relation

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10) Spaces with indefinite inner product (Kre?n spaces, Pontryagin spaces, etc.) (46C20) Canonical models for contractions and nonselfadjoint linear operators (47A45) Linear operators on spaces with an indefinite metric (47B50)

Related Items (5)

Generalized Nevanlinna Functions: Operator Representations, Asymptotic Behavior ⋮ An analytic characterization of the eigenvalues of self-adjoint extensions ⋮ Elliptic boundary value problems with \(\lambda \)-dependent boundary conditions ⋮ On realization of the Kreĭn-Langer class N_κ of matrix-valued functions in Pontryagin spaces ⋮ Rank one perturbations in a Pontryagin space with one negative square

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