Orthogonal stability and nonstability of a generalized quartic functional equation in quasi-\(\beta\)-normed spaces
Summary: In this work, we examine the generalized Hyers-Ulam orthogonal stability of the quartic functional equation in quasi-\(\beta\)-normed spaces. Moreover, we prove that this functional equation is not stable in a special condition by a counterexample.
scientific article; zbMATH DE number 7341752
scientific article