Sy Friedman

Sy-David Friedman
Professor Sy Friedman before a lecture during The First European Set Theory Meeting, Będlewo (Poland), July 2007
Born	(1953-05-06) May 6, 1953 (age 71) Chicago
Nationality	American/Austrian
Alma mater	MIT
Known for	Mathematical logic, Set theory, Large cardinal property
Scientific career
Fields	Mathematician
Institutions	University of Vienna
Doctoral advisor	Gerald E. Sacks

Sy-David Friedman (born May 23, 1953, in Chicago) is an American and Austrian mathematician and a (retired) professor of mathematics at the University of Vienna and the former director of the Kurt Gödel Research Center for Mathematical Logic. His main research interest lies in mathematical logic, in particular in set theory and recursion theory.

Friedman is the brother of Ilene Friedman and the brother of mathematician Harvey Friedman.