Abstract
In this study, we establish a novel version of Hermite-Hadamard inequalities through neoteric generalized Riemann-Liouville fractional integrals (RLFIs). For functions with the convex absolute values of derivatives, we create a variety of midpoint and trapezoid form inequalities, including the generalized RLFIs. Moreover, multiple fractional inequalities can be produced as special cases of the findings of this study.
MSC:
26A33; 26D10; 45P05
1. Introduction
The inequalities found by Hermite and Hadamard for convex mappings are frequently considered in mathematical literature (see [1,2,3] and [4] (p. 137)). These inequalities explain that if is a convex mapping from the interval into and with , then
If is concave, the above inequality is satisfied reversely.
Inequality (1) is so significant that several generalizations of these inequalities involving various forms of convexities had been studied [5,6,7]. The Hermit–Hadamard extension for incomplete gamma functions [8] and s-type convexity for n polynomials [9] are two examples of this.
During the past few decades, many papers have focused on generalizing inequalities of the trapezoid and midpoint types, which provide limits for the two sides of inequality (1). Trapezoid and midpoint inequalities for convex functions were first derived by the authors in [10,11], respectively. Using RLFIs, Sarikaya et al. [12] expanded the inequality (1) and demonstrated several related trapezoid type inequalities. In contrast, Iqbal et al. discovered various midpoint type inequalities for convex mappings utilizing RLFIs in [13]. In addition, Jleli and Samet [14] investigated Hermite–Hadamard type inequalities and some equivalent trapezoid type inequalities for generalized fractional integrals.
Fractional derivatives have been extensively applied in the fractional calculus field and its implications for other scientific disciplines. With great success, Caputo and Riemann–Liouville derivatives were widely employed to describe complicated dynamics in physics, biology, engineering, and plentiful other domains [15,16,17,18,19,20]. It is generally known that systems with a memory impact often occur in natural events. Therefore, for each sort of data, we constantly inquire about the appropriate nonlocal model to use. In addition, other writers had investigated novel fractional generalized operators with singular, nonlocal, and local kernels [21,22,23,24]. The generalized fractional integral is one of the fundamental concepts in fractional calculus. Many novel fractional inequalities are produced through generalized fractional integrals. For further inequalities of a similar kind, please see [8,25,26,27,28,29,30,31,32,33].
The definitions and mathematical underpinnings of fractional calculus principles that are used later in this study are provided below.
Definition 1
([16]). Let , . The RLFIs and of order are given by
and
respectively. Here, Γ symbolizes the Gamma function and
The next generalized RLFIs were presented by Jarad et al. [34]. Additionally, they offered certain features and connections with a number of other fractional operators in the literature.
Definition 2
([34]). Let , , and . For , the generalized RLFIs and are defined by
and
When and Equation (4) coincides with RLFIs (2). Additionally, it corresponds with the generalized fractional integral with in [34] as well as the Hadamard fractional integral with and in [16]. Furthermore, Equation (5) and RLFIs (3) are the same when and . Additionally, Equation (5) coincides with the generalized fractional integral with in [34] and with the Hadamard fractional integral with and in [16].
The current study aims to create novel versions of Hermite–Hadamard fractional inequalities for convex mappings. The proposed fractional operators are the generalized RLFIs (4) and (5). Furthermore, some extended midpoint and trapezoid inequalities are investigated under the generalized RLFIs. It is also important to note that the inequalities concerning Riemann–Liouville and Hadamard fractional integrals are produced as special cases of this study’s findings.
In light of the aforementioned tendency and motivated by the continuing efforts, the remaining portions of this work are organized as follows. In Section 2, we present new versions of the Hermite–Hadamard inequality that works with the generalized RLFIs (4) and (5). In Section 3, we offer a large number of midpoint type inequalities for differentiable convex functions. In Section 4, by using functions whose absolute value derivatives are convex mappings, we construct various trapezoid inequalities. Finally, we give the paper’s conclusion in Section 5.
2. New Version of Hermite–Hadamard Inequality
In this part, we discuss a new version of Hermite–Hadamard inequality that is applicable to the generalized RLFIs (4) and (5).
Theorem 1.
Assume χ is a convex function that goes from into . Then, for and , the inequalities below are valid for the generalized RLFIs.
Proof.
Since is convex on for , we can write
i.e.,
If we multiply the inequality (7) by and integrate the resulting inequality on , we have
By changing variables, we achieve
and similarly
On the other side, we have
Remark 1.
3. Midpoint Type Inequalities
This section provides numerous inequalities of the midpoint type for differentiable convex functions. These findings present numerous bounds for the variation between the left and central parts of the inequality (6).
Lemma 1.
Let be a differentiable mapping on and Then, for and , the identity below is valid.
Proof.
Employing integration by parts gives
and
So, the proof is accomplished. □
Theorem 2.
Let be a differentiable mapping on . If is convex on , then we get the inequality below.
where refers to the Beta function.
Proof.
By Lemma 1, we have
Considering the convexity of , we acquire
which finishes the proof. □
Remark 3.
Remark 4.
If we put in Theorem 2, then Theorem 2 returns to ([11], Theorem 2.2).
Theorem 3.
Let be a differentiable mapping on . If is convex on for , then the inequality below is satisfied.
where .
Proof.
Utilizing the convexity of and Hölder’s inequality [35], we get
where we take advantage of the fact:
for any and .
Likewise, we can gain
By substituting the inequalities (19) and (21) in (16), the first inequality of (18) is achieved. The second inequality can be fulfilled by setting and and utilizing the relation:
So, the desired result can be directly reached. □
Remark 5.
If we allow in Theorem 3, then we get the next inequality.
Remark 6.
If we allow in Theorem 3, then Theorem 3 and ([11], Theorem 2.4) are identical.
Theorem 4.
Assume is a differentiable mapping on . If is convex on , for some then the inequality below is fulfilled.
Proof.
Applying the convexity of , we have
and similarly, we have
where we have employed the integral inequality of power mean [36]:
Remark 7.
If we set in Theorem 4, then we have the inequality below.
Remark 8.
If we choose in Theorem 4, then Theorem 4 reduces to ([37], Remark 4.10).
4. Trapezoid Type Inequalities
In this section, we set up some trapezoid inequalities by using functions whose derivatives in absolute value are convex mappings. These inequalities give bounds for the difference between the middle and right terms of the inequalities (6).
Lemma 2.
Let be a differentiable mapping on and Then, for and , we get the following identity:
Proof.
Applying integration by parts, we have
and similarly,
This completes the proof. □
Theorem 5.
Let be a differentiable mapping on . If is convex on , then the inequality below holds.
Proof.
By Lemma 2, we acquire
Since is convex, we can write
which finishes the proof. □
Remark 9.
Remark 10.
If we choose in Theorem 5, then Theorem 5 reduces to ([10], Theorem 2.2).
Theorem 6.
Let be a differentiable mapping on . If is convex on for , then we have the next inequality
where .
Proof.
According to the convexity of and the well-known Hölder inequality, we get
and similarly
Remark 11.
If we take in Theorem 6, then we have the following inequality:
Remark 12.
If we choose in Theorem 6, then Theorem 6 reduces to ([37], Remark 5.5).
Theorem 7.
Assume is a differentiable mapping on . If is convex on for then we have the following inequality:
Proof.
Employing the integral inequality of power mean (25) and the convexity of yields
and similarly, we acquire
Remark 13.
If we assign in Theorem 7, then we have the following inequality:
Remark 14.
If we choose in Theorem 7, then Theorem 7 reduces to ([37], Remark 5.6).
5. Conclusions
Novel versions of Hermite–Hadamard inequalities through beneficial generalized RLFIs have been established in this study. Further, numerous midpoint and trapezoid form inequalities, including the suggested fractional integrals, have been proved for functions with the convex absolute values of derivatives. When , it was evident that the findings of this study could be simplified to the results gained by the usual RLFIs in (2) and (3). In addition, when , the findings of Kirmaci [11] and Budak et al. [37] may be derived. However, by using the more generic fractional operators listed in [20], one can expand and enhance these findings.
Author Contributions
Methodology and conceptualization, A.-A.H., A.A.A., H.B. and M.A.B.; data curation and writing—original draft, A.-A.H., A.A.A., H.B. and M.A.B.; investigation and visualization, A.-A.H., A.A.A., H.B. and M.A.B.; validation, writing—reviewing, and editing, A.-A.H., A.A.A., H.B. and M.A.B. All authors have read and agreed to the published version of the manuscript.
Funding
This research was funded by King Khalid University, Grant RGP.2/15/43.
Institutional Review Board Statement
Not applicable.
Informed Consent Statement
Not applicable.
Data Availability Statement
The corresponding author will provide the data used in this work upon reasonable request.
Acknowledgments
The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through Research Groups Program under grant RGP.2/15/43.
Conflicts of Interest
The authors declare no conflict of interest.
References
- Tariq, M.; Ahmad, H.; Sahoo, S.K.; Aljoufi, L.S.; Awan, S.K. A novel comprehensive analysis of the refinements of Hermite-Hadamard type integral inequalities involving special functions. J. Math. Comput. Sci. 2022, 26, 330–348. [Google Scholar] [CrossRef]
- Raees, M.; Anwar, M.; Farid, G. Error bounds associated with different versions of Hadamard inequalities of mid-point type. J. Math. Comput. Sci. 2021, 23, 213–229. [Google Scholar] [CrossRef]
- Hyder, A.; Barakat, M.A.; Fathallah, A.; Cesarano, C. Further Integral Inequalities through Some Generalized Fractional Integral Operators. Fractal Fract. 2021, 5, 282. [Google Scholar] [CrossRef]
- Pečarić, J.E.; Proschan, F.; Tong, Y.L. Convex Functions, Partial Orderings and Statistical Applications; Academic Press: Boston, MA, USA, 1992. [Google Scholar]
- Dragomir, S.S. Some Hermite–Hadamard type integral inequalities for convex functions defined on convex bodies in Rn. J. Appl. Anal. 2020, 26, 67–77. [Google Scholar] [CrossRef]
- Özcan, S.; İşcan, İ. Some new Hermite–Hadamard type inequalities for s-convex functions and their applications. J. Inequalities Appl. 2019, 2019, 201. [Google Scholar] [CrossRef]
- Set, E.; Butt, S.I.; Akdemir, A.O.; Karaoğlan, A.; Abdeljawad, T. New integral inequalities for differentiable convex functions via Atangana-Baleanu fractional integral operators. Chaos Solitons Fractals 2021, 143, 110554. [Google Scholar] [CrossRef]
- Mohammed, P.O.; Abdeljawad, T.; Baleanu, D.; Kashuri, A.; Hamasalh, F.; Agarwal, P. New fractional inequalities of Hermite–Hadamard type involving the incomplete gamma functions. J. Inequalities Appl. 2020, 2020, 263. [Google Scholar] [CrossRef]
- Rashid, S.; İşcan, İ.; Baleanu, D.; Chu, Y.-M. Generation of new fractional in equalities via npolynomials s-type convexity with applications. Adv. Differ. Equ. 2020, 2020, 264. [Google Scholar] [CrossRef]
- Dragomir, S.S.; Agarwal, R.P. Two inequalities for differentiable mappings and applications to special means of real numbers and to trapezoidal formula. Appl. Math. Lett. 1998, 11, 91–95. [Google Scholar] [CrossRef]
- Kirmaci, U.S. Inequalities for differentiable mappings and applications to special means of real numbers and to midpoint formula. Appl. Math. Comput. 2004, 147, 137–146. [Google Scholar] [CrossRef]
- Sarikaya, M.Z.; Set, E.; Yaldiz, H.; Başak, N. Hermite–Hadamard’s inequalities for fractional integrals and related fractional inequalities. Math. Comput. Model. 2013, 57, 2403–2407. [Google Scholar] [CrossRef]
- Iqbal, M.; Iqbal, B.; Nazeer, K. Generalization of inequalities analogous to Hermite–Hadamard inequality via fractional integrals. Bull. Korean Math. Soc. 2015, 52, 707–716. [Google Scholar] [CrossRef]
- Jleli, M.; Samet, B. On Hermite-Hadamard type inequalities via fractional integrals of a function with respect to another function. J. Nonlinear Sci. Appl. 2016, 9, 1252–1260. [Google Scholar] [CrossRef]
- Hilfer, R. Applications of Fractional Calculus in Physics; Word Scientific: Singapore, 2000. [Google Scholar]
- Kilbas, A.A.; Srivastava, H.M.; Trujillo, J.J. Theory and Applications of Fractional Differential Equations; Elsevier: Amsterdam, The Netherlands, 2006. [Google Scholar]
- Magin, R.L. Fractional Calculus in Bioengineering; Begell House Publishers: Redding, CA, USA, 2006. [Google Scholar]
- Hattaf, K.; Mohsen, A.A.; Al–Husseiny, H.F. Gronwall inequality and existence of solutions for differential equations with generalized Hattaf fractional derivative. J. Math. Comput. Sci. 2022, 27, 18–27. [Google Scholar] [CrossRef]
- El–hady, E.; Öğrekçi, S. On Hyers–Ulam–Rassias stability of fractional differential equations with Caputo derivative. J. Math. Comput. Sci. 2021, 22, 325–332. [Google Scholar] [CrossRef]
- Hyder, A.; Budak, H.; Almoneef, A.A. Further midpoint inequalities via generalized fractional operators in Riemann–Liouville sense. Fractal Fract. 2022, 6, 496. [Google Scholar] [CrossRef]
- Atangana, A.; Baleanu, D. New fractional derivative with non–local and non–singular kernel. Therm. Sci. 2016, 20, 757–763. [Google Scholar] [CrossRef]
- Hyder, A.; Barakat, M.A.; Fathallah, A. Enlarged integral inequalities through recent fractional generalized operators. J. Inequalities Appl. 2022, 2022, 95. [Google Scholar] [CrossRef]
- Abdeljawad, T.; Baleanu, D. Integration by parts and its applications of a new nonlocal fractional derivative with Mittag-Leffler nonsingular kernel. J. Nonlinear Sci. Appl. 2017, 10, 1098–1107. [Google Scholar] [CrossRef]
- Hyder, A.; Barakat, M.A. Novel improved fractional operators and their scientific applications. Adv. Differ. Equ. 2021, 2021, 389. [Google Scholar] [CrossRef]
- Sezer, S. The Hermite-Hadamard inequality for s-Convex functions in the third sense. AIMS Math. 2021, 6, 7719–7732. [Google Scholar] [CrossRef]
- Bakula, M.K.; Pečarić, J. Note on some Hadamard–type inequalities. J. Inequalities Pure Appl. Math. 2004, 5, 74. [Google Scholar]
- de la Cal, J.; Cárcamo, J.; Escauriaza, L. A general multidimensional Hermite–Hadamard type inequality. J. Math. Anal. Appl. 2009, 356, 659–663. [Google Scholar] [CrossRef]
- Erden, S.; Budak, H.; Zeki Sarikaya, M.; Iftikhar, S.; Kumam, P. Fractional Ostrowski type inequalities for bounded functions. J. Inequalities Appl. 2020, 2020, 123. [Google Scholar] [CrossRef]
- Ödemir, M.E.; Avci, M.; Set, E. On some inequalities of Hermite–Hadamard-type via m-convexity. Appl. Math. Lett. 2010, 23, 1065–1070. [Google Scholar] [CrossRef]
- Ödemir, M.E.; Avci, M.; Kavurmaci, H. Hermite–Hadamard-type inequalities via (α,m)-convexity. Comput. Math. Appl. 2011, 61, 2614–2620. [Google Scholar] [CrossRef]
- Saglam, A.; Sarikaya, M.Z.; Yildirim, H. Some new inequalities of Hermite-Hadamard’s type. Kyungpook Math. J. 2010, 50, 399–410. [Google Scholar] [CrossRef]
- Akkurt, A.; Sarıkaya, M.Z.; Budak, H.; Yıldırım, H. On the Hadamard’s type inequalities for co–ordinated convex functions via fractional integrals. J. King Saud-Univ. -Sci. 2017, 29, 380–387. [Google Scholar] [CrossRef]
- Mohammed, P.O.; Abdeljawad, T.; Alqudah, M.A.; Jarad, F. New discrete inequalities of Hermite–Hadamard type for convex functions. Adv. Differ. Equ. 2021, 2021, 122. [Google Scholar] [CrossRef]
- Jarad, F.; Uğurlu, E.; Abdeljawad, T.; Baleanu, D. On a new class of fractional operators. Adv. Differ. Equ. 2017, 2017, 247. [Google Scholar] [CrossRef]
- Cvetkovski, Z. Hölder’s Inequality, Minkowski’s Inequality and Their Variants. In Inequalities: Theorems, Techniques and Selected Problems; Cvetkovski, Z., Ed.; Springer: Berlin/Heidelberg, Germany, 2012; pp. 95–105. [Google Scholar]
- Kadakal, H. On refinements of some integral inequalities using improved power–mean integral inequalities. Numer. Methods Partial. Differ. Equ. 2020, 36, 1555–1565. [Google Scholar] [CrossRef]
- Budak, H.; Ertuğral, F.; Sarikaya, M.Z. New generalization of Hermite-Hadamard type inequalities via generalized fractional integrals. Ann. Univ. -Craiova-Math. Comput. Sci. Ser. 2020, 47, 369–386. [Google Scholar]
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. |
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).