Continuous q-Hermite polynomials
In mathematics, the continuous q-Hermite polynomials are a family of basic hypergeometric orthogonal polynomials in the basic Askey scheme. Roelof Koekoek, Peter A. Lesky, and René F. Swarttouw (2010, 14) give a detailed list of their properties.
Source: Wikipedia — Continuous q-Hermite polynomials (CC BY-SA 4.0)