Dan Freed

Daniel Stuart Freed (born 17 April 1959) is an American mathematician, specializing in global analysis and its applications to supersymmetry, string theory, and quantum field theory.

Freed studied at Harvard University, where he received his bachelor's and master's degrees in 1981.

He received his Ph.D. from the University of California, Berkeley in 1985 with thesis The geometry of loop groups under Isadore Singer.

[1] As a postdoc, Freed was a Moore Instructor at the Massachusetts Institute of Technology, and then became an assistant professor at the University of Chicago.

In 2002, he was an invited speaker at the International Congress of Mathematicians in Beijing (Twisted K-theory and loop groups).