1 | University of California BERKELEY(1979-1983) |
2 | Mathematics Science Research Institute(1984) |
3 | University of California BERKELEY(1985) |
4 | Mathematics Science Research Institute(1987-1990) |
5 | University of California BERKELEY(1995) |
6 | Mathematics Science Research Institute(1996) |
7 | OHIO STATE University(1997) |
8 | 南开大学(2002) |