Approximating Common Fixed Points of Nonexpansive Mappings in Banach Spaces

Naseer Shahzad, Reem Al-Dubiban Β· Georgian Mathematical Journal Β· 2006

Abstract Let 𝐾 be a nonempty closed convex subset of a real uniformly convex Banach space 𝐸 and 𝑆, 𝑇 : 𝐾 β†’ 𝐾 two nonexpansive mappings such that 𝐹(𝑆) ∩ 𝐹(𝑇) := {π‘₯ ∈ 𝐾 : 𝑆π‘₯ = 𝑇π‘₯ = π‘₯} β‰  ΓΈ. Suppose {π‘₯𝑛} is generated iteratively by π‘₯1 ∈ 𝐾, π‘₯𝑛+1 = (1 – Ξ± 𝑛)π‘₯𝑛 + Ξ± 𝑛𝑆[(1 – Ξ² 𝑛)π‘₯𝑛 + Ξ² 𝑛𝑇π‘₯𝑛], 𝑛 β‰₯ 1, where {Ξ± 𝑛}, {Ξ² 𝑛} are real sequences in [0, 1]. In this paper, we discuss the weak and strong convergence of {π‘₯𝑛} to some π‘₯* ∈ 𝐹(𝑆) ∩ 𝐹(𝑇).

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