Duke Mathematical Journal · 1940 · 31 citations · 0 references
Natural SciencesArchitectural RepresentationAlgebraQuantum MechanicsRepresentation TheoryCanonical TransformationsCoordinate TransformationsHilbert Space FormalismLie AlgebrasLinear TransformationsOperator TheoryHilbert Space RepresentationsSymmetry OperationsSymmetry TransformationsTransformationsUnitary Transformations