Optimality conditions for nonsmooth multiobjective bilevel optimization using tangential subdifferentials
Mohsine Jennane, El Mostafa Kalmoun, Lhoussain El Fadil · RAIRO - Operations Research · 2021
In combining the value function approach and tangential subdifferentials, we establish necessary optimality conditions of a nonsmooth multiobjective bilevel programming problem under a suitable constraint qualification. The upper level objectives and constraint functions are neither assumed to be necessarily locally Lipschitz nor convex.