SET-VALUED VARIATIONAL PRINCIPLES. WHEN MIGRATION IMPROVES QUALITY OF LIFE

Abstract

In this paper, in the context of quasi-metric spaces, we obtain two set-valued versions of the Ekeland variational-type principle by means of lower and upper set less relations, for the case where the perturbations need not satisfy the triangle inequality. An application in terms of migration problems and quality of life is given. ©2022 Journal of Applied and Numerical Optimization