 Meixner–Pollaczek polynomials

The Meixner–Pollaczek polynomials are a class of orthogonal polynomials that arise in various areas of mathematics, particularly in spectral theory, probability, and mathematical physics. They can be defined as a part of the broader family of Meixner polynomials, which are associated with certain types of stochastic processes, especially those arising in the context of random walks and queuing theory.