中文摘要：

本文研究了均衡约束数学规划（MPEC）问题.利用其弱稳定点,获得了一种新的约束规格–MPEC的伪正规约束规格.用一种简单的方式,证明了该约束规格是介于MPEC-MFCQ（即MPEC,Mangasarian-Fromowitz约束规格）与MPEC-ACQ（即MPEC,Abadie约束规格）之间的约束规格,因此该约束规格也可以导出MPEC问题的M-稳定点.最后通过两个例子,说明了该约束规格与MPEC-MFCQ以及与MPEC-ACQ之间是严格的强弱关系.

英文摘要：

This paper considers mathematical programs with equilibrium constraints（MPEC）. A new constraint qualification called MPEC-pseudonormality is proposed by weakly stationary. According to a simple way, we prove that MPEC-pseudonormality is between MPEC Mangasarian-Fromovitz constraint qualification（MPEC-MFCQ） and MPEC Abadies constant qulification（MPEC-ACQ）. So MPEC-pseudonormality can also derive M-stationary of MPEC.Finally, we state that the relationships among MPEC-pseudonormality, MPEC-MFCQ and MPEC-ACQ are strict.