Richard Wellman

Available identifiers

Publication	Date of Publication	Type
Spectral analysis of the sixth-order Krall differential expression	2020-07-27	Paper
Self-adjoint operators and the general GKN-EM theorem	2019-12-11	Paper
Differential operator for discrete Gegenbauer-Sobolev orthogonal polynomials: eigenvalues and asymptotics	2018-05-15	Paper
On Birman's sequence of Hardy-Rellich-type inequalities	2017-12-20	Paper
Self-Adjoint Operators in Extended Hilbert Spaces $H\oplus W$: An Application of the General GKN-EM Theorem	2017-04-23	Paper
On the spectra of left-definite operators	2013-10-10	Paper
Left-definite theory with applications to orthogonal polynomials	2009-12-18	Paper
The Sobolev orthogonality and spectral analysis of the Laguerre polynomials $\{L_{n}^{-k}\}$ for positive integers $k$	2004-08-10	Paper
Legendre polynomials, Legendre--Stirling numbers, and the left-definite spectral analysis of the Legendre differential expression	2003-02-23	Paper
A general left-definite theory for certain self-adjoint operators with applications to differential equations	2002-09-08	Paper
Orthogonal polynomial solutions of linear ordinary differential equations	2001-10-14	Paper
The left-definite spectral theory for the classical Hermite differential equation.	2000-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q4350121	1997-08-28	Paper
https://portal.mardi4nfdi.de/entity/Q4897322	1996-12-03	Paper
The symmetric form of the Koekoeks' Laguerre type differential equation	1995-11-27	Paper

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