I was born in Hanoi (Vietnam). After finishing  high school  (Chu Van An and Hanoi-Amsterdam), I went to Hungary and  received my Bachelor at Etvos Univ. in Budapest (1994). I obtained  PhD at Yale (1998) under the direction of L. Lovasz.

Currently,  I hold the Percey F. Smith chair of mathematics at Yale University, after spending time at IAS, Microsoft Research, UC San Diego and Rutgers.

Honors: Sloan Fellows (2002), Polya Prize (2008), Fulkerson Prize (2012).