scientific article; zbMATH DE number 789725
zbMath0823.47039MaRDI QIDQ4846335
Publication date: 29 August 1995
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
second-order differential operatorexistence and uniquenessstrongly positive operatorirregular boundary conditionsquasi-elliptic differential equationsystem of eigenfunctions and adjoint functionscompleteness of eigenfunctions and adjoint functionsgeneralized solution of the boundary value problemirregular homogeneous boundary conditions of general kind
General topics in linear spectral theory for PDEs (35P05) General theory of ordinary differential operators (47E05) General theory of partial differential operators (47F05) (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces (47A70)
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