Series in the root vectors of operators that are very close to being self-adjoint

DOI10.1007/BF01077144zbMath0416.47005OpenAlexW2010836249MaRDI QIDQ754448

M. S. Agranovich

Publication date: 1978

Published in: Functional Analysis and its Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01077144

zbMATH Keywords

root vectorsoperator with discrete spectrum

Mathematics Subject Classification ID

Completeness of eigenfunctions and eigenfunction expansions in context of PDEs (35P10) (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces (47A70)

Related Items (1)

The damped string problem revisited

Cites Work

• Wave equation scattering in even-dimensional spaces

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