Sorin Popa
Sorin Teodor Popa (born 24 March 1953) is a Romanian American mathematician working on operator algebras.[1] Popa earned his PhD from the University of Bucharest in 1983 under the supervision of Dan-Virgil Voiculescu, with thesis Studiul unor clase de subalgebre ale[1][2] He has advised 15 doctoral students at UCLA, including Adrian Ioana.[2] In 1990, Popa was an invited speaker at the International Congress of Mathematicians (ICM) in Kyoto, where he gave a talk on "Subfactors and Classifications in von Neumann algebras".[3] In 2006, he gave a plenary lecture at the ICM in Madrid on "Deformation and Rigidity for group actions and Von Neumann Algebras".