Stability of a functional equation related to distance measure. II. (English) Zbl 1203.39018
Summary: The present work continues the study of the stability of the functional equations of the type , namely, (i) , and (ii) for all , where is an abelian group. These functional equations arise in the characterization of symmetrically compositive sum form distance measures.
|39B82||Stability, separation, extension, and related topics|
|39B52||Functional equations for functions with more general domains and/or ranges|