Concepedia
Bulletin of the American Mathematical Society · 1966 · 107 citations · 2 references
Open access
Natural SciencesPhysicsTheoretical PhysicsEigenvalue ProblemsHilbert Space FormalismOperator TheoryQuantum OperatorsSpectral AnalysisSpectral TheorySpectral DecompositionSpectral TheoremSturm - Liouville Theory
2
Lower Bounds for Eigenvalues
R. J. Duffin · Physical Review · 1947 · 62 citations
Natural Sciences, High-performance Computing, Vibration +4
Lower Bounds for the First Eigenvalue of Elliptic Equations
Murray H. Protter · Annals of Mathematics · 1960 · 38 citations
Natural Sciences, Physics, Fluid Dynamics +10