What Columbia University professor proved the Earle-Hamilton fixed-point theorem with Clifford Earle in 1968?
Richard S. Hamilton Richard Streit Hamilton (born 1943) is Davies Professor of Mathematics at Columbia University.
George Glauberman George Glauberman (born March 3, 1941, New York City) is a mathematician at the University of Chicago who works on finite simple groups. He proved the ZJ theorem and the Z theorem.