Research Article
Fractional Hadamard and Fejér-Hadamard Inequalities
Associated with Exponentially ðs, mÞ-Convex Functions
Shuya Guo,
1
Yu-Ming Chu ,
2,3
Ghulam Farid,
4
Sajid Mehmood,
5
and Waqas Nazeer
6
1
School of Mathematics and Big Data, Chongqing University of Arts and Sciences, Chongqing 402160, China
2
Department of Mathematics, Huzhou University, Huzhou 313000, China
3
Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering, Changsha University of Science
& Technology, Changsha 410114, China
4
Department of Mathematics, COMSATS University Islamabad, Attock Campus, Pakistan
5
Government Boys Primary School Sherani, Hazro, Attock, Pakistan
6
Department of Mathematics, GC University Lahore, Pakistan
Correspondence should be addressed to Yu-Ming Chu; chuyuming@zjhu.edu.cn
Received 10 April 2020; Accepted 11 July 2020; Published 7 August 2020
Academic Editor: Hugo Leiva
Copyright © 2020 Shuya Guo 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.
The aim of this paper is to present the fractional Hadamard and Fejér-Hadamard inequalities for exponentially ðs, mÞ-convex
functions. To establish these inequalities, we will utilize generalized fractional integral operators containing the Mittag-Leffler
function in their kernels via a monotone function. The presented results in particular contain a number of fractional Hadamard
and Fejér-Hadamard inequalities for s-convex, m-convex, ðs, mÞ-convex, exponentially convex, exponentially s-convex, and
convex functions.
1. Introduction and Preliminaries
Integral operators play an important role in the subject of
mathematical analysis. Fractional integral operators have
been proven very useful in almost all fields of science
and engineering. By using fractional integral operators, a
lot of well-known inequalities have been studied, and in
the consequent, they are generalized and extended in the
subject of fractional calculus. Fractional integral inequal-
ities provide support in the formation of modeling of
physical phenomenons. They also provide their role in
the uniqueness of solutions of fractional boundary value
problems. A large number of fractional integral inequal-
ities exist in literature due to fractional integral operators
(see, [1–5]). The Riemann-Liouville fractional integral
operators are the first formulation of fractional integral
operators of nonintegral order.
Definition 1 [6]. Let η ∈ L
1
½a, b. The Riemann-Liouville
fractional integral operators J
σ
a+
η and J
σ
b−
η of order σ ∈
ℂðℛðσÞ >0Þ are defined by
J
σ
a+
η ð Þ u ðÞ =
1
Γσ ðÞ
ð
u
a
u − z ð Þ
σ−1
η z ðÞdz, ð1Þ
J
σ
b−
η ð Þ u ðÞ =
1
Γσ ðÞ
ð
b
u
z − u ð Þ
σ−1
η z ðÞdz, ð2Þ
where ΓðσÞ =
Ð
∞
0
e
−z
z
σ−1
dz.
Next, we give the definition of generalized fractional
integral operators containing the Mittag-Leffler function in
their kernels as follows.
Hindawi
Journal of Function Spaces
Volume 2020, Article ID 2410385, 10 pages
https://doi.org/10.1155/2020/2410385