Question: What Columbia University professor proved the Earle-Hamilton fixed-point theorem with Clifford Earle in 1968?
Sentence (from "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.
Relevant evidence: No