Wolfgang Hahn (April 30, 1911 – January 10, 1998) was a German mathematician who worked on special functions, in particular orthogonal polynomials. He introduced Hahn polynomials, Hahn difference, Hahn q-addition (or Jackson-Hahn-Cigler q-addition), and the Hahn–Exton q-Bessel function. He was an honorary member of the Austrian Mathematical Society. References External links Pictures of Wolfgang Hahn from Oberwolfach 1911 births 1998 deaths Academic staff of the Technical University of Braunschweig 20th-century German mathematicians Q-analogs