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math.OC2026
Interval-Valued Optimization Problems for Strongly LU-E-Invex and Strongly LU-E-Preinvex Functions
Tauheed, Akhlad Iqbal, Amir Suhail
In this paper, we introduce and explore the concepts of strongly LU-E-preinvex (SLUEP), pseudo strongly LU-E-preinvex (PSLUEP) and strongly LU-E-invex (SLUEI) functions. To illustr…
math.OC2025
On the Characterization of gH-partial derivatives and gH-Product for Interval-Valued Functions
Amir Suhail, Tauheed, Akhlad Iqbal
In this paper, we show by a counterexample that the gH-partial derivative of interval-valued functions (IVFs) may exist even when the partial derivative of the end point functions…