Efficient two-sided estimates for the spectrum of some elliptic operators

DOI10.1007/S10559-022-00481-YzbMath1505.65285OpenAlexW4294379216MaRDI QIDQ2103748

Viktor G. Prikazchikov

Publication date: 9 December 2022

Published in: Cybernetics and Systems Analysis (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s10559-022-00481-y

zbMATH Keywords

maximum principleelliptic operatorsfinite-difference methoderror of phase velocities of grid wavesexact formulas for errors of eigenvaluesoscillation equationstwo-sided estimates of spectrum

Mathematics Subject Classification ID

Estimates of eigenvalues in context of PDEs (35P15) Error bounds for boundary value problems involving PDEs (65N15) Maximum principles in context of PDEs (35B50) Second-order elliptic equations (35J15) Finite difference methods for boundary value problems involving PDEs (65N06) Optimality conditions for minimax problems (49K35) Numerical methods for eigenvalue problems for boundary value problems involving PDEs (65N25)

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