On the Suzuki nonexpansive-type mappings

preprint2012arXivOpen access

Abstract

It is shown that if CC is a nonempty convex and weakly compact subset of a Banach space XX with M(X)>1M(X)>1 and T:C→CT:C\rightarrow C satisfies condition (C)(C) or is continuous and satisfies condition (Cλ)(C_λ) for some λ∈(0,1)λ\in (0,1), then TT has a fixed point. In particular, our theorem holds for uniformly nonsquare Banach spaces. A similar statement is proved for nearly uniformly noncreasy spaces.

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