Mokwon University

Solution and Stability of a Multi-Quadratic Functional Equation

In this paper, we characterize the general solution to a system of functional equations with respect to the multi-quadratic mappings by proving that any such mapping can be uniquely represented via a 2n-additive pairwise symmetric mapping. And we prove the stability results with...

Nicotinamide Mononucleotide Suppresses α-MSH-Induced Melanogenesis via Downregulation of Tyrosinase in B16F10 Cells

Skin hyperpigmentation caused by excessive melanin production has led to increasing interest in the development of effective anti-melanogenic agents. In this study, the anti-melanogenic effects and underlying mechanisms of nicotinamide mononucleotide (NMN) were investigated using...