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Common fixed point theorems of Gregus type for weakly compatible mappings satisfying generalized contractive conditions. (English) Zbl 1138.54031
Let $$(X,d)$$ be a metric space and $$A, B, S, T : X \to X$$ four mappings. The author gives some metric conditions which imply that $$A, B, S$$ and $$T$$ have a unique common fixed point.

##### MSC:
 54H25 Fixed-point and coincidence theorems (topological aspects)
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##### References:
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