Alexandra Bellow
Alexandra Bellow , née Alexandra Bagdasar , also Alexandra Ionescu Tulcea (born August 30, 1935 in Bucharest ), is a Romanian-American mathematician who deals with ergodic theory , probability theory and measure theory.
Life
Bellow grew up as the daughter of two doctors - her father Dumitru Bagdasar was a well-known neurosurgeon - in Bucharest and studied at the University of Bucharest , where she graduated in 1957. In the same year she went to the United States with her first husband, the mathematician Cassius Ionescu-Tulcea , where he did research at Yale University . She began there with her dissertation ( Ergodic theory of random series ) and received her doctorate in 1959 with Shizuo Kakutani . Then she was at the University of Pennsylvania (Assistant Professor 1962 to 1964), the University of Illinois at Urbana-Champaign (Associate Professor 1964 to 1967) and Northwestern University , where she was given a full professorship in 1968. In 1996 she became Professor Emeritus there. She was visiting scholar at the Hebrew University of Jerusalem , Caltech , Tel Aviv University , Brandeis University , Göttingen University , MIT and the University of California, Los Angeles .
With her first husband in the 1960s she developed the lifting theory initiated by John von Neumann in functional analysis , which has applications in probability theory. With him she also examined martingales in Banach rooms . A problem posed by her was solved by Jean Bourgain . In Germany she worked with Ulrich Krengel .
From 1974 to 1985 she was married to the writer Saul Bellow , and she appears in his key novel Ravelstein . She was married to the mathematician Alberto Calderón in her third marriage from 1989 until his death in 1998 .
Awards
- 1987: Humboldt Research Award
- 1991: Noether Lecture
- Fellow of the American Mathematical Society
Fonts
- Topics in the theory of liftings (as Alexandra Ionescu Tulcea, with C. Ionescu-Tulcea). Springer-Verlag, Results of Mathematics, Volume 48, 1969.
Web links
- Alexandra Bellow in the Mathematics Genealogy Project (English)
- Noether Lectures 1991
- Biography at Agnes Scott College
| personal data | |
|---|---|
| SURNAME | Bellow, Alexandra |
| ALTERNATIVE NAMES | Bagdasar, Alexandra (maiden name); Tulcea, Alexandra Ionescu |
| BRIEF DESCRIPTION | Romanian-American mathematician |
| DATE OF BIRTH | August 30, 1935 |
| PLACE OF BIRTH | Bucharest |