Common fixed point theorems for some families of maps
Let \(A, B, S, T : (X,d) \to (X,d)\) be four mappings. The author gives some metric conditions which imply that \(A\), \(B\), \(S\) and \(T\) have a unique common fixed point. Some fixed point theorems are given, too.
scientific article; zbMATH DE number 695851