Abstract
Let C be a closed convex subset of a complete convex metric space X. In this paper a class of selfmappings on C, which satisfy the nonexpansive type condition (2) below, is introduced and investigated. The main result is that such mappings have a unique fixed point.
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Ćirić, L. On a generalization of a Greguš fixed point theorem. Czechoslovak Mathematical Journal 50, 449–458 (2000). https://doi.org/10.1023/A:1022870007274
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DOI: https://doi.org/10.1023/A:1022870007274