This book outlines the modern theory of functional equations and inequalities in several variables. It consists of three parts. The first is devoted to additive and convex functions defined on linear ...

Abstract: In this paper, we are concerned with the stability of a Schrödinger equation through boundary coupling with a wave equation, where an internal dissipative damping is designed at the wave ...

Abstract: Solving the time-varying optimization with nonlinear equation constraint (TVONEC) remains a significant challenge due to the complexities introduced by temporal variability and nonlinearity, ...