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Common fixed point theorems for some families of maps. (English) Zbl 0811.54034

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.

MSC:

54H25 Fixed-point and coincidence theorems (topological aspects)
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