Communications in Mathematical Physics · 2001 · 96 citations · 2 references
Natural SciencesMathematicsAlgebraDifferential EquationsGeometryDifference EquationsLinear AlgebraTransfer FunctionsOrthogonal Polynomial BasesOrthogonal Polynomial ExpansionsOrthogonal Polynomials
2
On the perturbation of spectra
William F. Donoghue · Communications on Pure and Applied Mathematics · 1965 · 148 citations