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zbMath0985.34020MaRDI QIDQ2737102

B. N. Lyashenko

Publication date: 11 September 2001

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

zbMATH Keywords

approximation singular differential operators multiparameter eigenvalues

Mathematics Subject Classification ID

Sturm-Liouville theory (34B24) Eigenvalues, estimation of eigenvalues, upper and lower bounds of ordinary differential operators (34L15) Quantum theory (81-XX)

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