Rate My Professor Stefan Kahler

Dr. rer. nat. Stefan Kahler serves as Lehrkraft für besondere Aufgaben (Teacher for Special Tasks) specializing in Lehramt (teacher training) and Studieneingangsphase (introductory study phase) within the Department of Mathematics at Rheinisch-Westfälische Technische Hochschule Aachen (RWTH Aachen University). He contributes to academic advising for Bachelor and Master of Education programs in Mathematics. As a Dozent (lecturer) in the Lehramt Mathematik team, he teaches courses for the first and second years of study. Stefan Kahler also acts as the Module Pool Administrator in the department and is a member of the Fachkommissionen (subject committees) at Faculty 1 of RWTH Aachen University. Previously associated with Lehrstuhl A für Mathematik, his office is in Building 1953, Room 259, Pontdriesch 14-16, 52062 Aachen. Office hours are Thursdays from 4:30 to 6:00 p.m., and he can be contacted at +49 241 80-93969.

Stefan Kahler earned his Dr. rer. nat. degree from Technische Universität München in 2016, with Prof. Rupert Lasser as advisor. His dissertation, "Characterizations of Orthogonal Polynomials and Harmonic Analysis on Polynomial Hypergroups," addresses topics in orthogonal polynomials and harmonic analysis. His research encompasses orthogonal polynomials, polynomial hypergroups, sieved random walk polynomials, q-Legendre polynomials, and linearization properties. Key publications include "Expansions and Characterizations of Sieved Random Walk Polynomials" in SIGMA 19 (2023), 103; "Dual spaces vs. Haar measures of polynomial hypergroups" in Journal of Approximation Theory (2025); "Harmonic analysis of little q-Legendre polynomials" in Journal of Approximation Theory (2023); "Nonnegative and Strictly Positive Linearization of Jacobi and Generalized Chebyshev Polynomials" in Constructive Approximation (2021); and arXiv preprints such as arXiv:2306.16411v2, arXiv:2212.11229v3, arXiv:2008.08079v3, arXiv:1812.05542v2, and arXiv:1806.00339 on related mathematical topics.