Approximate endpoints for set-valued contractions in metric spaces. (English) Zbl 1202.54033

In the present paper, the authors establish some existence results concerning approximate fixed points, endpoints and approximate endpoints of multivalued contractions. Qualitative estimates of the sets of approximate fixed points and approximate endpoints for set-valued almost I-contractions are also developed.


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