2008- 北京大学数学科学学院 教授1997-2008 北京大学数学科学学院 副教授1995-1997 北京大学数学科学学院 博士后几何与拓扑.F.Ding, Uncountably many smooth structures on some 4-manifolds, Proceedings of the International Conference on Manifolds and Singularities, Beijing(1995), 161-167 [1] F.Ding, Smooth structures on some open 4-manifolds, Topology 36(1997), 203-207 F.Ding and H.Geiges, Symplectic fillability of tight contact structures on torus bundles, Algebraic and Geometric Topology 1(2001), 153-172 F.Ding and X.Zhan, On the unitary orbit of complex matrices, SIAM J. Matrix Anal. Appl. 23(2001), 511-516 Ding Fan, Some examples of nonorientable 4-manifolds, Advances in Mathematics 31(2002), 37-40 F.Ding and H.Geiges, A Legendrian surgery presentation of contact 3-manifolds, Math. Proc. Cambridge Philos. Soc., to appear F.Ding, H.Geiges and A.I.Stipsicz, Surgery diagrams for contact 3-manifolds, preprint