Nolan Russell Wallach (born August 3, 1940) is a mathematician known for work in the representation theory of reductive algebraic groups.
He is the author of the two-volume treatise Real Reductive Groups.
[2] He earned his Ph.D. from Washington University in St. Louis in 1966, under the supervision of Jun-Ichi Hano.
In 1978 he was an Invited Speaker with talk The spectrum of compact quotients of semisimple Lie groups[4] at the International Congress of Mathematicians in Helsinki.
[2][5] His doctoral students include AMS Fellow Alvany Rocha.