“…Chen and Cheng [5] proposed the vector variational inequality in an infinite-dimensional space and applied it to the vector optimization problem. Since then, many authors have extensively studied various types of vector variational inequalities in abstract space (see, for example, [4,6,8,9,11,14,21,27,28,30,33,37,38] and the references therein). Recently, some authors have investigated the optimality conditions for vector variational inequalities.…”