Titlebook: Contributions to Operator Theory in Spaces with an Indefinite Metric; The Heinz Langer Ann Aalt Dijksma,Israel Gohberg,Reinhard Mennicken B

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書目名稱Contributions to Operator Theory in Spaces with an Indefinite Metric影響因子(影響力)學(xué)科排名




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書目名稱Contributions to Operator Theory in Spaces with an Indefinite Metric被引頻次




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書目名稱Contributions to Operator Theory in Spaces with an Indefinite Metric讀者反饋學(xué)科排名

LIMIT

Perturbations of Krein spaces preserving the nonsingularity of the critical point infinity,n we show that these properties remain true for a certain perturbation of the operator, acting in a slightly perturbed Krein space. This result is applied to elliptic differential operators with indefinite weights and to certain difference operators.

笨重

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鋼盔

Visualisierung meteorologischer Datenat similar realizations exist in the “nonstationary setting”, i.e. when one considers upper triangular contractions (which appear in time-variant system theory as “transfer functions” of dissipative systems). Two approaches are used: complementation theory and an approach based on the theory of rela

鋼盔

CARK

Implementation der Tele-Media-Architektur,stems and separated selfadjoint boundary conditions. We show, that . is isomet-rically isomorphic to the operator of multiplication with the independent variable in the Hilbert space ..(?), where the matrix-valued mapping . can be calculated via the Stieltjes inversion formula from a Nevanlinna matr

聲明

The Epidemiology of Parasitic Diseases in ,genvalue problem (when .(λ) = λ . ? .), the spectrum of .(λ) is contained in its numerical range. Properties of the numerical range are investigated with special emphasis on the cases when .(λ) has only real spectrum (and, possibly, the point at infinity) and when the coefficients of the matrix poly

暴發(fā)戶

https://doi.org/10.1007/978-3-642-60725-7tical points, see [9]; if neither of these points is a singular critical point then . is similar to a Hilbert space selfadjoint operator, that is, it is a scalar operator with real spectrum (see [9] for the definition and properties of the Krein space operators).