Multiplicity of Sturm–Liouville eigenvalues
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摘要
The geometric multiplicity of each eigenvalue of a self-adjoint Sturm–Liouville problem is equal to its algebraic multiplicity. This is true for regular problems and for singular problems with limit-circle endpoints, including the case when the leading coefficient changes sign.
论文关键词：Eigenvalues,Multiplicity,Sturm–Liouville,Singular boundary conditions
论文评审过程：Received 8 August 2003, Available online 1 July 2004.
论文官网地址：https://doi.org/10.1016/j.cam.2004.01.036
