scientific article; zbMATH DE number 3625907

zbMath0403.35060MaRDI QIDQ4188185

Victor Ivrii

Publication date: 1978

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

CorrectnessPrincipal Symbola Priori EstimatePseudo-Differential OperatorsEnergy IntegralsLocal FactorizationNonstrictly Hyperbolic OperatorsPositive DefinitenessPropagation of Wave FrontsSubprincipal Symbol

Mathematics Subject Classification ID

A priori estimates in context of PDEs (35B45) Initial value problems for higher-order hyperbolic equations (35L30) Higher-order hyperbolic equations (35L25) Operator partial differential equations (= PDEs on finite-dimensional spaces for abstract space valued functions) (35R20) Propagation of singularities; initial value problems on manifolds (58J47)

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