Joseph Lehner (October 29, 1912, New York City – August 5, 2013, Haverford, PA) was a mathematician at

Michigan State University Michigan State University (Michigan State or MSU) is a public university, public Land-grant university, land-grant research university in East Lansing, Michigan, United States. It was founded in 1855 as the Agricultural College of the State o ...

(1957–1963), the

University of Maryland The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland, United States. Founded in 1856, UMD is the flagship institution of the Univ ...

(1963–1972), and the

University of Pittsburgh The University of Pittsburgh (Pitt) is a Commonwealth System of Higher Education, state-related research university in Pittsburgh, Pennsylvania, United States. The university is composed of seventeen undergraduate and graduate schools and colle ...

(1972–1980). He worked on

automorphic function In mathematics, an automorphic function is a function on a space that is invariant under the action of some group, in other words a function on the quotient space. Often the space is a complex manifold and the group is a discrete group. Factor o ...

s and introduced Atkin–Lehner theory.

Publications

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References

* * 20th-century American mathematicians 1912 births 2013 deaths American men centenarians Michigan State University faculty University of Maryland, College Park faculty University of Pittsburgh faculty University of Pennsylvania alumni {{US-mathematician-stub