The orthogonality of Al-Salam-Carlitz polynomials for complex parameters
Howard Cohl, Wenqing Xu, Roberto Costas-Santos
In this contribution, we study the orthogonality conditions satisfied by Al-Salam-Carlitz polynomials $U^(a)}_n(x;q)$ when the parameters $a$ and $q$ are not necessarily real nor 'classical'. We establish orthogonality on a simple contour in the complex plane which depends on the parameters. In all cases we show that the orthogonality conditions characterize the Al-Salam-Carlitz Polynomials $U_n^(a)}(x;q)$ of degree $n$ up to a constant factor. We also obtain a generalization of the unique generating function for these polynomials.
Frontiers in Orthogonal Polynomials and q-Series, Contemporary Mathematics and its Applications: Monographs, Expositions and Lecture Notes, Vol. 1
World Scientific Publishing Company, Hackensack, NJ
, Xu, W.
and Costas-Santos, R.
The orthogonality of Al-Salam-Carlitz polynomials for complex parameters, World Scientific Publishing Company, Hackensack, NJ, [online], https://doi.org/10.1142/9789813228887_0008, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=919584
(Accessed December 5, 2023)