<p style='text-indent:20px;'>In this paper, a new concept of generalized convexity is introduced for not necessarily differentiable vector optimization problems with <inline-formula><tex-math id="M4">\begin{document}$ E $\end{document}</tex-math></inline-formula>-differentiable functions. Namely, an id="M5">\begin{document}$ vector-valued function, the id="M6"&g...