... \{0}/ ∅,forall>0, and ii in Theorem 4.10 is false. In fact, for any β>0andd ∈ Tfx,fS ∩ −q −D βU ⊂−int R2, T2fx,fS,dTfx,fS,dR2,sincefx ∈ intfS.Butx ... Multiobjective Optimization ProblemsYing Gao,1Xinmin Yang,1and Heung Wing Joseph Lee21Department of Mathematics, Chongqing Normal University, Chongqing 400047, China2Department of Applied Mathematics, ... 2 Journal of Inequalities and ApplicationsDuring the past decades, researchers and practitioners in optimization had a keeninterest in approximate solutions of optimization...