Bachelor, Xian Jiaotong University, Shanxi, China, 1988. Master of Arts, University of Science and Technology China, Hefei, Anhui, 1990. Doctor of Philosophy, Yale University, 1995.
Teaching assistant mathematics Yale University, New Haven, 1990-1994. Dissertation fellow Sloan Foundation, 1994-1995. Lecturer research institute mathematics science Kyoto (Japan) University, since 1995. Research grantee Ministry Education Japan, 1996, New Field Research grantee, 1997.
Married Romeliza Pita Villegas, September 14, 1996.