Hans Maass

Hans Maass (June 17, 1911 – April 15, 1992) was a German mathematician. He is known for Maass wave forms, Koecher–Maass series, and Maass–Selberg relations.

Quotes

• The investigations of Siegel on discrete groups of motions of the hyperbolic plane with a fundamental region of finite volume ... make possible a simple characterization of groups conjugate to the modular group by a minimal condition.
  • Lectures on modular functions of one complex variable. Vol. 29. Berlin-Heidelberg-New York: Springer, 1983 revised edition. (notes by Sunder Lal taken on lectures given by Maass at the Tata Institute of Fundamental Research in 1962–1963)

Quotes about Hans Maass

• ... in 1949, a paper appeared by a German mathematician Hans Maass, which raised some rather interesting problems. You see, earlier the automorphic functions and forms — one had essentially thought of functions that were often called holomorphic, analytical. And Maass started studying functions that were not of that nature, but were instead solutions of a certain eigenvalue problem, which had a certain type of behavior with respect to the discrete group which corresponds to the modular forms. Maass also worked essentially just on the modular group and its subgroups, not on general groups.
  • Atle Selberg, as quoted by Betsy Devine, Interview with Atle Selberg, conducted at his office in Fuld Hall, Institute for Advanced Study. publications.ias.edu (June 15, 1989). (quote from p. 15)