Research Article
Iterative Scheme for Split Variational Inclusion and a Fixed-Point
Problem of a Finite Collection of Nonexpansive Mappings
M. Dilshad ,
1
A. F. Aljohani,
1
and M. Akram
2
1
Department of Mathematics, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
2
Department of Mathematics, Faculty of Science, Islamic University of Madinah, Saudi Arabia
Correspondence should be addressed to M. Dilshad; mdilshaad@gmail.com
Received 31 July 2020; Revised 22 August 2020; Accepted 31 August 2020; Published 9 October 2020
Academic Editor: Mohammad Mursaleen
Copyright © 2020 M. Dilshad et al. This is an open access article distributed under the Creative Commons Attribution License,
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article is aimed at introducing an iterative scheme to approximate the common solution of split variational inclusion and a
fixed-point problem of a finite collection of nonexpansive mappings. It is proven that under some suitable assumptions, the
sequences achieved by the proposed iterative scheme converge strongly to a common element of the solution sets of these
problems. Some consequences of the main theorem are also given. Finally, the convergence analysis of the sequences achieved
from the iterative scheme is illustrated with the help of a numerical example.
1. Introduction
Let H
1
and H
2
be two real Hilbert spaces endowed with
inner product h⋅ , ⋅i and induced norm k⋅k. A mapping
T : H
1
⟶ H
1
is called contraction, if ∃κ ∈ ð0, 1Þ such
that kT ðφÞ − T ðψÞk ≤ κkφ − ψk, ∀φ, ψ ∈ H
1
. If κ =1, then
T becomes nonexpansive. A mapping T is said to have a
fixed point, if ∃φ ∈ ðH
1
Þ such that T ðφÞ = ðφÞ. Further, if
T
n
: H
1
⟶ H
1
, ðn = 1,⋯,MÞ is a finite collection of
nonexpansive mappings. Then, the fixed-point problem
(FPP) is defined as find φ ∈ H
1
such that
\
M
n=1
T
n
φ ðÞ = φ: ð1Þ
It is easy to show that if
T
M
n=1
FixðT
n
Þ ≠ 0, then
T
M
n=1
FixðT
n
Þ is closed and convex. Many iterative methods
have been adopted to examine the solution of a fixed-
point problem for nonexpansive mappings and its variant
forms, see [1–5] and references therein.
We know that most of the techniques for solving the
fixed-point problems can be acquired from Mann’s iterative
technique [3], namely, for arbitrary x
0
∈ C , compute
x
k+1
= α
k
x
k
+1 − α
k
ð ÞTx
k
, k ≥ 0, ð2Þ
where T is a nonexpansive mapping from a nonempty closed
convex subset C of Hilbert space H
1
to itself and α
n
is a
control sequence, which force fx
k
g to converge (weak) to a
fixed point of T . To obtain the strong convergence result,
Moudafi [4] proposed the viscosity approximation method
by combining the nonexpansive mapping T with a contrac-
tion of given mapping f over C . For an arbitrary x
0
∈ C ,
compute the sequence fx
k
g generated by
x
k+1
= α
k
fx
k
ð Þ +1 − α
k
ð ÞTx
k
, k ≥ 0, ð3Þ
where α
n
∈ ð0, 1Þ goes slowly to zero. The sequence fx
k+1
g
achieved from this iterative method converges strongly to a
fixed point of T .
On the other hand, let us recall some work about split
variational inequality/inclusion problems. A multivalued
Hindawi
Journal of Function Spaces
Volume 2020, Article ID 3567648, 10 pages
https://doi.org/10.1155/2020/3567648