Sorin Teodor Popa (24 March 1953) is a Romanian-American mathematician working on operator algebras. He is a professor at UCLA.
Popa earned his Ph.D. from the University of Bucharest in 1983 under the supervision of Dan-Virgil Voiculescu.
He has advised 15 doctoral students at UCLA, including Adrian Ioana.
Honors and awards
In 1990 he was an invited speaker at the International Congress of Mathematicians (ICM) in Kyoto (on "Subfactors and Classifications in von Neumann algebras"). He was a Guggenheim Fellow in 1995. In 2006 he gave a plenary lecture at the ICM in Madrid (on "Deformation and Rigidity for group actions and Von Neumann Algebras"). In 2009 he was awarded the Ostrowski Prize. He is one of the inaugural fellows of the American Mathematical Society.
- Classification of subfactors and their endomorphisms, American Mathematical Society, 1995
- co-authored with M. Pimsner, "Entropy and index for subfactors", Annales scientifiques de l'Ecole normale supérieure (1986)
- "Classification of amenable subfactors of type II", Acta Mathematica (1994)