scientific article; zbMATH DE number 1059282

zbMath0900.35268MaRDI QIDQ4353584

Rainer Hempel

Publication date: 18 December 1997

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

zbMATH Keywords

periodic elliptic operatorseigenvalues in a spectral gap

Mathematics Subject Classification ID

Boundary value problems for second-order elliptic equations (35J25) Estimates of eigenvalues in context of PDEs (35P15) Perturbation theory of linear operators (47A55)

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