3 papers
math.FA2020
Approximation of general 3-variable Jensen -functional inequalities in complex Banach spaces
Gang Lu, Wenlong Sun, Hanyue Qiao +2
In this paper, we introduce and investigate general 3-variable Jensen -functional equation, and prove the Hyers-Ulam stability of the Jensen functional equations associated with…
math.FA2020
Ulam stability of Jensen functional inequality in groups
Gang Lu, Lulu Qu, Yuanfeng Jin +1
In this paper we establish the Ulam stability of Jensen functional inequality in some classes of groups.
math.FA2020
Stability of set-valued generalized additive Cauchy functional equation
Gang Lu, Yuanfeng Jin, Choonkil Park
The main purpose of this paper is to determine the solution of generalized convex set-valued mappings satisfying certain functional equation. Some conclusions of stability of set-v…