What Columbia University professor proved the Earle-Hamilton fixed-point theorem with Clifford Earle in 1968?
Earle–Hamilton fixed-point theorem In mathematics, the Earle–Hamilton fixed point theorem is a result in geometric function theory giving sufficient conditions for a holomorphic mapping of an open domain in a complex Banach space into itself to have a fixed point. The result was proved in 1968 by Clifford Earle and Richard S. Hamilton by showing that, with respect to the Carathéodory metric on the domain, the holomorphic mapping becomes a contraction mapping to which the Banach fixed-point theorem can be applied.
David S. Johnson David Stifler Johnson (December 9, 1945 – March 8, 2016) was an American computer scientist specializing in algorithms and optimization. He was the head of the Algorithms and Optimization Department of AT&T Labs Research from 1988 to 2013, and was a visiting professor at Columbia University from 2014 to 2016. He was awarded the 2010 Knuth Prize.