Ciprian Foias

Ciprian Ilie Foiaș (20 July 1933 – 22 March 2020) was a Romanian mathematician. He was awarded the Norbert Wiener Prize in Applied Mathematics in 1995. He was known for his works in operator theory. Foias was born in Reșița, Caraș County, Kingdom of Romania. The Foias constant is named after him. Foias is listed as an ISI highly cited researcher.^[1]

Ciprian Foias
Born	Ciprian Ilie Foiaș (1933-07-20)20 July 1933 Reșița, Caraș County, Kingdom of Romania
Died	22 March 2020(2020-03-22) (aged 86) Tempe, Arizona, United States of America
Nationality	Romania
Alma mater	University of Bucharest
Awards	Wiener Prize (1995)
Scientific career
Fields	Mathematics
Institutions	Indiana University University of Bucharest
Doctoral advisor	Miron Nicolescu
Doctoral students	Zoia Ceaușescu Adrian Ocneanu Dan-Virgil Voiculescu

He died in Tempe, Arizona on March 22, 2020.^[2]