Cassius Ionescu-Tulcea, Date of Birth, Place of Birth
TweetCassius Ionescu-Tulcea
American mathematician
Date of Birth: 14-Oct-1923
Place of Birth: Bucharest
Profession: mathematician
Nationality: United States
Zodiac Sign: Libra 
About Cassius Ionescu-Tulcea
- Cassius Tocqueville Ionescu Tulcea (born 14 October 1923 in Bucharest) is a Romanian-American mathematician, specializing in probability theory, statistics and mathematical analysis.Ionescu Tulcea received his diploma from the University of Bucharest in 1946; there he was an assistant professor from 1946 to 1950, a lecturer from 1950 to 1951, and an associate professor from 1952 to 1957.
- Additionally, from 1949 to 1957 he was a researcher at the Institute of Mathematics of the Romanian Academy.
- In 1957 he moved to the United States with his wife Alexandra Ionescu Tulcea (née Bagdasar), who had been his student.
- From 1957 to 1961 he worked as a research associate and visiting lecturer at Yale University.
- He received his doctorate from Yale in 1959 under the supervision of Einar Hille with thesis Semi-groups of Operators.
- Cassius Ionescu Tulcea was from 1959 to 1961 a visiting professor at Yale University, from 1961 to 1964 an associate professor at the University of Pennsylvania, and from 1964 to 1966 a full professor at the University of Illinois at Urbana–Champaign.
- He became in 1966 a full professor at Northwestern University and retired from there as professor emeritus. His marriage to Alexandra Ionescu Tulcea lasted from 1956 to 1969 when they divorced.
- During their marriage, the two mathematicians wrote a number of papers together, as well as a well-regarded research monograph on lifting theory.
- John von Neumann initiated lifting theory in functional analysis with applications in probability theory.
- The Ionescu-Tulcea theorem, an important existence theorem for time-discrete stochastic processes, is named after Cassius Ionescu Tulcea (1949).
- He also did research on mathematical game theory and mathematical economics.
- He co-authored a book on casino gambling and several textbooks on mathematics; he also wrote a 1981 book on casino dice games and gambling systems and a 1982 book on casino blackjack. In 1957 he was awarded the Prize of the Romanian Academy of Sciences.
- His doctoral students include George Maltese and Robert Langlands.
Read more at Wikipedia