Structure relations of classical orthogonal polynomials in the quadratic and q-quadratic variable

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dc.contributor.author Nangho, Maurice Kenfack
dc.contributor.author Jordaan, Kerstin Heidrun
dc.date.accessioned 2019-08-12T10:03:05Z
dc.date.available 2019-08-12T10:03:05Z
dc.date.issued 2018-11-27
dc.description This paper is a contribution to the Special Issue on Orthogonal Polynomials, Special Functions and Applications (OPSFA14). en_ZA
dc.description.abstract We prove an equivalence between the existence of the rst structure relation satis ed by a sequence of monic orthogonal polynomials fPng1n =0, the orthogonality of the second derivatives fD2 xPng1n =2 and a generalized Sturm{Liouville type equation. Our treat- ment of the generalized Bochner theorem leads to explicit solutions of the di erence equation [Vinet L., Zhedanov A., J. Comput. Appl. Math. 211 (2008), 45{56], which proves that the only monic orthogonal polynomials that satisfy the rst structure relation are Wilson poly- nomials, continuous dual Hahn polynomials, Askey{Wilson polynomials and their special or limiting cases as one or more parameters tend to 1. This work extends our previous result [arXiv:1711.03349] concerning a conjecture due to Ismail. We also derive a second structure relation for polynomials satisfying the rst structure relation. en_ZA
dc.description.department Mathematics and Applied Mathematics en_ZA
dc.description.librarian am2019 en_ZA
dc.description.sponsorship The research of MKN was supported by a Vice-Chancellor's Postdoctoral Fellowship from the University of Pretoria. The research by KJ was partially supported by the National Research Foundation of South Africa under grant number 108763. en_ZA
dc.description.uri http://www.emis.de/journals/SIGMA en_ZA
dc.identifier.citation Kenfack, M. & Jordaan, K. 2018, 'Structure relations of classical orthogonal polynomials in the quadratic and q-quadratic variable', Symmetry, Integrability and Geometry: Methods and Applications, vol. 14, art. 126, pp. 1-26. en_ZA
dc.identifier.issn 1815-0659
dc.identifier.other 10.3842/SIGMA.2018.126
dc.identifier.uri http://hdl.handle.net/2263/70950
dc.language.iso en en_ZA
dc.publisher National Academy of Science of Ukraine en_ZA
dc.rights The authors retain the copyright for their papers published in SIGMA under the terms of the Creative Commons Attribution-ShareAlike License. en_ZA
dc.subject Classical orthogonal polynomials en_ZA
dc.subject Classical q-orthogonal polynomials en_ZA
dc.subject Askey{ Wilson polynomials en_ZA
dc.subject Wilson polynomials en_ZA
dc.subject Structure relations en_ZA
dc.subject Characterization theorems en_ZA
dc.title Structure relations of classical orthogonal polynomials in the quadratic and q-quadratic variable en_ZA
dc.type Article en_ZA


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