Robert Langlands

Robert Phelan Langlands (; born October 6, 1936) is an American-Canadian mathematician. He is best known as the founder of the Langlands program that results connecting representation theory and automorphic forms to the study of Galois groups in number theory, for which he received the 2018 Abel Prize. 
He is an emeritus professor and occupies Albert Einstein's office at the Institute for Advanced Study in Princeton.