算子代数、算子理论。

发表的部分论文
1. Annihilator-preserving maps, multipliers, and derivations, Linear Algebra Appl. 432(2010),5-13.(with Z. Pan)
2. Local derivations and local automorphisms on some algebras, J. Operator Theory 60(2008), 29-44. (with Don Hadwin).
3. Isomorphisms of some reflexive algebras, Studia Math. 187(2008), 95-100(with Z. Pan).
4.Bounded reflexivity of operator subspaces II, Integral Equations Operator Theory 57(2007）, 473-490. (with Don Hadwin and Z. Pan).
5. Characterizations of isomorphisms and derivations of some algebras, J. Math. Anal. Appl. 332(2007), 1314-1322. (with Z. Pan and Xu Huansu).
6. algebraic reflexivity of linear transformations, Proc. Amer. Math. Soc. 135(2007), 1695-1699. (with Z. Pan).
7. Complete positivity of elementary operators on C*-algebras, Integral Equations Oper. Theory 52 (2005), 477-482. (with Don Hadwin).
8. Absolutely continuous representations and a Kaplansky density theorem for free semigroup algebras, J. Funct. Anal. 224 (2005), 160-191. (with Davidson and Pitts )