Born in Chongqing, China. BSc in Mathematics at Chongqing Jianzhu University (now being emerged with Chongqing University) in 1982, MSc in Operations Research and Control Theory in Chinese Academy of Science in 1987, and Doctor of Philosophy in The University of New South Wales, Australia in 1994. Now a professor in Department of Applied Mathematics at The Hong Kong Polytechnic University, Hong Kong from 2005. ISI Citation Classic 2000 for the paper "The vector complementary problem and its equivalences with the weak minimal element in ordered spaces", Journal of Mathematical Analysis and Applications, Vol. 153 (1990) pp. 136-158. The President's Award for Outstanding Performance / Achievement 2000 in the category of Research and Scholarly Activities, The Hong Kong Polytechnic University. The First Prize of Natural Science from the Chongqing  Municipal Government in 2006.

Research Monographs: 
Duality in Optimization and Variational Inequalities
Lagrange-type Functions in Constrained Nonconvex Optimization
Vector Optimization: Set-Valued and Variational Analysis

Links: 
Teaching
Awards and Professional Memberships
Research Grants
Research Students/Associates/Visitors
Publications

The International Conference in Nonlinear Programming with Applications, May 29 - 1 June 1 2006, Shanghai

The Second International Conference in Nonlinear Programming with Applications, April 7 - 9  2008, Beijing

Selected Publications

Meng K.W. and Yang X.Q., Optimality conditions via exact penalty functions (submitted)

Fang Y.P. and Yang X.Q., Multiple objective and discontinuously pecewise linear programs (submitted)

Wang S. and Yang X.Q., A power penalty method for linear complementarity problems. Operations Research Letters. Vol. 36 (2008), no. 2, pp. 211-214.

Zheng X.Y. and Yang X.Q., Weak sharp minima for semi-infinite optimization problems with applications. SIAM J. Optim. Vol. 18 (2007), no. 2, pp. 573-588.

Zheng X.Y. and Yang X.Q.,  Lagrange multipliers in nonsmooth semi-infinite optimization problems. Mathematics of Operations Research.
Vol. 32 No. 1 (2007) pp. 168-181.

Yang X.Q. and Meng Z.Q., Lagrange multipliers and calmness conditions of order p, Mathematics of Operations Research Vol. 32 No. 1 (2007) pp. 95-101.

Huang X.X. and Yang X.Q., Generalized Levitin-Polyak well-posedness in constrained optimization, SIAM J. on Optimization. Vol. 17 (2006), no. 1, pp. 243-258.

Yang, X.Q. and Ralph, D. Characterizations for perturbed exact penalty functions. Nonlinear Analysis. Vol. 62, no. 1, (2005) pp. 101-106.

Deng S. and Yang X.Q., Weak sharp minima in multicriteria linear programming, SIAM J. on Optimization. Vol. 15, no. 2, (2004) pp. 456-460.

Yang X.M., Yang X.Q. and Teo K.L., Generalized invexity and generalized invariant monotonicity. Journal of Optimization Theory and Applications. Vol. 117 (2003) pp. 607-625.

Huang X.X. and Yang X.Q., A unified augmented Lagrangian approach to duality and exact penalization. Mathematics of Operations Research. Vol. 28 (2003) pp. 524-532.

Yang X.Q. and Yao J.C.,  Gap functions and existence of solutions to set-valued vector variational inequalities. Journal of Optimization Theory and Applications. Vol. 115 (2002) pp. 407-417.

Huang X.X. and Yang X.Q. Nonlinear Lagrangian for multiobjective optimization and applications to duality and exact penalization, SIAM J. Optimization, Vol. 13, no. 3, pp. 675-692, 2002.

Rubinov A., Huang X.X., and Yang X.Q., The zero duality gap property and lower semicontinuity of the perturbation function, Mathematics of Operations Research Vol. 27, pp. 775-791, 2002.

Yang X.Q. and Huang X.X., A nonlinear Lagrangian approach to constrained optimization problems, SIAM J. Optimization, Vol. 14, (2001) pp. 1119 - 1144.

Cai X.Q., Teo K.L., Yang X.Q. and Zhou X.Y., Portfolio optimization under a minimax rule, Management Science, Vol. 46 (2000) pp. 957-972.

Rubinov A.M., Glover B.M. and Yang X.Q., Decreasing functions with applications to penalization, SIAM Journal on Optimization, Vol. 10, No. 1, (1999) pp. 289-313. 

Yang X.Q., Second-order global optimality conditions for convex composite optimization, Mathematical Programming Vol. 81 (1998), pp.327-347.

Jeyakumar V.  and Yang X.Q., Convex composite multi-objective nonsmooth programming, Mathematical Programming, Vol. 59 (1993) 325-343.