RT info:eu-repo/semantics/article T1 Differential stability properties in convex scalar and vector optimization A1 An, D. T. V. A1 Gutiérrez Vaquero, César K1 Differential stability K1 ε-subdifferential K1 Parametric convex programming K1 Limiting calculus rule K1 Optimal value function K1 Approximate solution K1 Vector optimization K1 Infimal set K1 Cone proper set K1 Weak minimal solution AB This paper focuses on formulas for the ε-subdifferential of the optimal value function of scalar and vector convex optimization problems. These formulas can be applied when the set of solutions of the problem is empty. In the scalar case, both unconstrained problems and problems with an inclusion constraint are considered. For the last ones, limiting results are derived, in such a way that no qualification conditions are required. The main mathematical tool is a limiting calculus rule for the ε-subdifferential of the sum of convex and lower semicontinuous functions defined on a (non necessarily reflexive) Banach space. In thevector case, unconstrained problems are studied and exact formulas are derived by linear scalarizations. These results are based on a concept of infimal set, the notion of cone proper set and an ε-subdifferential for convex vector functions due to Taa. PB Springer SN 1877-0533 YR 2021 FD 2021 LK https://uvadoc.uva.es/handle/10324/74146 UL https://uvadoc.uva.es/handle/10324/74146 LA eng NO Set-Valued and Variational Analysis, 2021, vol. 29, n. 4 p. 893-914 NO Producción Científica DS UVaDOC RD 08-abr-2025