Conference

• International Conference on Variational and Topological Methods in Nonlinear Analysis,
  MAY 20--22, 2010, BEIJING, CHINA.

• April 14, 2010, Shantou University, Toward Modern Mathematics--Series Lectures No.82.
  Title: Classical and modern variational principle.

• September 14--26, 2009. Visiting the Chern Institute of Mathematics, Nankai University.

• September 5, 2009, Visiting Lanzhou University.
  Title: Critical point theory, Lyapunov-Schmidt reduction and multiple solutions for nonlinear differential equations.

• 7th AIMS International Conference on Dyn. Systems, Diff. Equations and Applications,
  MAY 2008, ARLINGTON TEXAS USA.
  Title: Lyapunov-Schmidt reduction, critical groups and mulltiple solutions of elliptic resonant problems.

• Workshop and Conference on Recent Trends in Nonlinear Variational Problems,
  APRIL 2003, ABDUS SALAM ICTP, TRIESTE, ITALY.

• The $\mathbf{13^\mathrm{th}}$ National Conference on Nonlinear Functional Analysis,
  APRIL 2003, YANGZHOU, CHINA.
  Title: Critical groups and existence of solutions for $p$-Laplacian equations.

• Satellite Conference on Nonlinear Functional Analysis, ICM 2002,
  AUGUEST 2002, TAIYUAN, CHINA.
  Title: Critical groups at infinity, saddle point reduction and elliptic resonant problems.

• International Congress of Mathematicians (ICM2002),
  AUGUEST 2002, BEIJING, CHINA.

• The $\mathbf{12^\mathrm{th}}$ National Conference on Nonlinear Functional Analysis,
  AUGUEST 2001, QINHUANGDAO, CHINA.