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zbMath0543.35070MaRDI QIDQ3331640

N. N. Gaĭdaĭ

Publication date: 1981

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

zbMATH Keywords

Sobolev space characteristics Tricomi problem Tricomi operator existence of a positive eigenvalue

Mathematics Subject Classification ID

General topics in linear spectral theory for PDEs (35P05) Sobolev spaces and other spaces of ``smooth functions, embedding theorems, trace theorems (46E35) Partial differential equations of mixed type and mixed-type systems of partial differential equations (35M99)

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