“…Particularly, Pareto/weak efficient solution notions of vector optimization have been extensively studied; see [1,2,6,3,32,27]. In recent years, optimality conditions for optimization problems are widely studied since they play a crucial role in duality theory and algorithm design; see [1,7,8,9,10,28,33,34]. Basically, all optimality conditions are derived using theorem of separation and theorem of alterative or an adequate substitute such as Ekeland's principle; see [6,7,34,11,12,13].…”