Basis property of eigenfunctions of nonselfadjoint operator pencils generated by the equation of nonhomogeneous damped string

DOI10.1007/BF01262296zbMath0855.47010OpenAlexW2023547346MaRDI QIDQ1920981

Publication date: 12 January 1997

Published in: Integral Equations and Operator Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01262296

zbMATH Keywords

viscous damping resonances Riesz bases asymptotic representations scattering of elastic waves vibrations of a string nonconstant bounded density nonconstant damping coefficient nonselfadjoint quadratic operator pencils

Mathematics Subject Classification ID

Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces (46B15)

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