Isadore Singer

Not to be confused with Isidore Singer.

Isadore Singer
Singer in Berkeley, 1977
Born	May 3, 1924 Detroit, Michigan, US
Died	February 11, 2021(2021-02-11) (aged 96) Boxborough, Massachusetts, US
Education	University of Michigan (BS) University of Chicago (MS, PhD)
Known for	Ambrose–Singer theorem Atiyah–Singer index theorem Atiyah–Hitchin–Singer theorem Ray–Singer torsion Kadison–Singer problem
Spouse	Rosemary Singer ​ (m. 1956)​
Awards	Bôcher Memorial Prize (1969) National Medal of Science (1983) Wigner Medal (1988) Steele Prize (2000) Abel Prize (2004)
Scientific career
Fields	Mathematics
Workplaces	Massachusetts Institute of Technology University of California, Berkeley Princeton University Columbia University University of California, Los Angeles
Thesis	Lie Algebras of Unbounded Operators (1950)
Doctoral advisor	Irving Segal
Doctoral students	Richard L. Bishop Andrew Browder Antun Domic David G. Ebin Daniel Friedan Dan Freed John Lott Hugo Rossi Linda Rothschild Gerald Schwarz Nancy K. Stanton Frank W. Warner

Isadore Manuel Singer (May 3, 1924 – February 11, 2021) was an American mathematician. He was an institute professor in the Department of Mathematics at the Massachusetts Institute of Technology and a professor of Mathematics at the University of California, Berkeley.

Singer is noted for his work with Michael Atiyah, proving the Atiyah–Singer index theorem in 1962, which enabled new interactions between pure mathematics and theoretical physics. In early 1980s, while a professor at Berkeley, Singer co-founded the Mathematical Sciences Research Institute (MSRI) with Shiing-Shen Chern and Calvin Moore.