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zbMath0709.34066MaRDI QIDQ3491984

Bernard Helffer, Johannes Sjöstrand

Publication date: 1988

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

zbMATH Keywords

semiclassical analysis Harper's equation

Mathematics Subject Classification ID

Asymptotic distributions of eigenvalues in context of PDEs (35P20) General spectral theory of ordinary differential operators (34L05) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10)

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