Plancherel–Rotach asymptotics

The Plancherel–Rotach asymptotics are asymptotic results for orthogonal polynomials. They are named after the Swiss mathematicians Michel Plancherel and his PhD student Walter Rotach, who first derived the asymptotics for the Hermite polynomial and Laguerre polynomial.

Source: Wikipedia — Plancherel–Rotach asymptotics (CC BY-SA 4.0)