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Approximate fixed point sequences and convergence theorems for Lipschitz pseudocontractive maps

Authors: H. Zegeye; Charles E. Chidume;

Approximate fixed point sequences and convergence theorems for Lipschitz pseudocontractive maps

Abstract

Let K K be a nonempty closed convex subset of a real Banach space E E and T T be a Lipschitz pseudocontractive self-map of K K with F ( T ) := { x ∈ K : T x = x } ≠ ∅ F(T):=\{x\in K:Tx=x\}\neq \emptyset . An iterative sequence { x n } \{x_n\} is constructed for which | | x n − T x n | | → 0 ||x_n-Tx_n||\rightarrow 0 as n → ∞ n\rightarrow \infty . If, in addition, K K is assumed to be bounded, this conclusion still holds without the requirement that F ( T ) ≠ ∅ . F(T)\neq \emptyset . Moreover, if, in addition, E E has a uniformly Gâteaux differentiable norm and is such that every closed bounded convex subset of K K has the fixed point property for nonexpansive self-mappings, then the sequence { x n } \{x_n\} converges strongly to a fixed point of T T . Our iteration method is of independent interest.

Keywords

accretive multivalued operator, Banach space, Iterative procedures involving nonlinear operators, Applied Mathematics, General Mathematics, Equations involving nonlinear operators (general), iterative process, operator inclusion, Contraction-type mappings, nonexpansive mappings, \(A\)-proper mappings, etc., Nonlinear accretive operators, dissipative operators, etc.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
57
Average
Top 10%
Top 10%
Green
hybrid