Ph.D, University of California,  1989

B.S.,  Fudan University, 1983

Discrete-time Markov chains, in particular, interacting particle systems, random walk on trees and in a random environment, percolation.  (MathSciNet)

• “Two random walks on the open cluster of Z^2 meet infinitely often (with Xinxing Chen).” Science China Mathematics 53, (2010).
• “A note on the finite collision property of random walks.” (with Bei Wei and Fuxi Zhang), Statistics and Probability Letters 78, (2008).
• “Anchored expansion, percolation and speed.” (with Y. Peres), Ann. of Probability 32, (2004).
• “On the infinite cluster of the Bernoulli bond percolation in the Scherk’s graph.” J. Applied Probab. 38, (2001).
• “Average properties of random walks on Galton-Watson trees.” Ann. Inst. H. Poincare, 33, (1997).