Calculus of Variations and Partial Differential Equations · 2000 · 59 citations · 20 references
Natural SciencesPhysicsQuantum MechanicsEigenvalue ProblemsHilbert Space FormalismOperator TheorySpectral AnalysisSpectral TheoryVariational FormulationDirac BracketsEigenvalue Spectral AnalysisEigenvalues Of The LaplacianSturm - Liouville TheorySturm-liouville Theory
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James D. Bjorken, Sidney D. Drell, Peter B. Kahn · American Journal of Physics · 1966 · 2.6K citations
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