H. Scheel et S. Scholtes, Mathematical programs with complementarity constraints: Stationarity, optimality, and sensitivity, MATH OPER R, 25(1), 2000, pp. 1-22
We study mathematical programs with complementarity constraints. Several st
ationarity concepts, based on a piecewise smooth formulation, are presented
and compared. The concepts are related to stationarity conditions for cert
ain smooth programs as well as to stationarity concepts for a nonsmooth exa
ct penalty function. Further, we present Fiacco-McCormick type second order
optimality conditions and an extension of the stability results of Robinso
n and Kojima to mathematical programs with complementarity constraints.