Tridiagonalization of the hypergeometric operator and the Racah-Wilson algebra

Tridiagonalization of the hypergeometric operator and the Racah-Wilson algebra
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DOI：
10.1090/proc/13082
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发表时间：
2015-06
期刊：
arXiv: Classical Analysis and ODEs
影响因子：
--
通讯作者：
Vincent X. Genest;M. Ismail;L. Vinet;A. Zhedanov
Vincent X. Genest;M. Ismail;L. Vinet;A. Zhedanov
中科院分区：
其他
文献类型：
--
作者：
Vincent X. Genest;M. Ismail;L. Vinet;A. Zhedanov

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The algebraic underpinning of the tridiagonalization procedure is investigated. The focus is put on the tridiagonalization of the hypergeometric operator and its associated quadratic Jacobi algebra. It is shown that under tridiagonalization, the quadratic Jacobi algebra becomes the quadratic Racah-Wilson algebra associated to the generic Racah/Wilson polynomials. A degenerate case leading to the Hahn algebra is also discussed.