Gregory Hjorth
| Greg Hjorth | |
|---|---|
| Born |
14 June 1963 Melbourne, Australia |
| Died | 13 January 2011 (aged 47) Melbourne, Australia |
| Residence | Australia, United States |
| Nationality | Australian |
| Fields | Mathematics, set theory, logic |
| Institutions |
University of Melbourne University of California |
| Doctoral advisor | William Hugh Woodin |
| Known for | Hjorth's theory of turbulence |
| Notable awards | First Sacks Prize from the Association for Symbolic Logic (ASL) (1993); Sloan Foundation Fellowship 1998; An invitation to the International Congress of Mathematicians (1998); The Karp Prize of the ASL (2003); Invited key speaker to the Alfred Tarski Lectures at UC Berkeley |
Greg Hjorth (14 June 1963 – 13 January 2011) was an Australian Professor of Mathematics,chess International Master (1984) and joint (with Ian Rogers) Commonwealth Champion in 1983. He worked in the field of mathematical logic.
Hjorth earned his Ph.D. in 1993, under the direction of W. Hugh Woodin, with a dissertation entitled On the influence of second uniform indiscernible. He held faculty positions at the University of California, Los Angeles and the University of Melbourne. Among his most important contributions to set theory was the so-called theory of turbulence, used in the theory of Borel equivalence relations.
Hjorth won the Doeberl Cup in Canberra in 1982, 1985 and 1987 and played for Australia in the Chess Olympiads of 1982, 1984 and 1986.
His best single performance was at Brighton (BCF Championship) 1984, where he scored four of seven possible points (57%) against 2551-rated opposition, for a performance rating of 2570.
Hjorth died of a heart attack in Melbourne, on 13 January 2011.
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