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Article

Novel q-Differentiable Inequalities

1
General Education Department, Anhui Xinhua University, Hefei 230088, China
2
Department of Mathematics, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
3
Department of Mathematics, Faculty of Science and Arts, Düzce University, Düzce 81620, Türkiye
4
Jiangsu Key Laboratory for NSLSCS, School of Mathematical Sciences, Nanjing Normal University, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Symmetry 2023, 15(8), 1576; https://doi.org/10.3390/sym15081576
Submission received: 26 June 2023 / Revised: 28 July 2023 / Accepted: 9 August 2023 / Published: 12 August 2023
(This article belongs to the Special Issue Symmetry in Quantum Calculus)

Abstract

:
The striking goal of this study is to introduce a q -identity for a parameterized integral operator via differentiable function. First, we discover the parameterized lemma for the q -integral. After that, we provide several q -differentiable inequalities. By taking suitable choices, some interesting results are obtained. With all of these, we displayed the findings from the traditional analysis utilizing q 1 .

1. Introduction

The theory of inequality has a unique and important place for the function class known as convex functions, which has a very helpful definition and feature-based structure. We really encounter convexity frequently and in a variety of ways. The most common example is while we are standing up, which is safe as long as our center of gravity’s vertical projection is contained inside the concave area of our feet. Convexity also significantly influences our daily lives through its myriad uses in business, health, the arts, and other fields. This function class has enhanced its relevance by being used in studies of inequality theory and in several application domains by recognizing novel types of inequality. It has been found that there is a very strong relationship between inequalities and convex functions. Both theoretical and practical domains greatly benefit from the convex function. Through its diverse uses in commerce, industry, and medicine, convexity also has a profound influence on our daily life. It is one of the most sophisticated disciplines of mathematical modeling because of the variety of implementations available. The definition of convex functions is
Definition 1
([1]). If Ω : [ μ , ν ] is convex, then the inequality
Ω ( t ϕ 2 + ( 1 t ) ϕ 1 ) t Ω ( ϕ 2 ) + ( 1 t ) Ω ( ϕ 1 ) ,
holds for every ϕ 1 , ϕ 2 [ μ , ν ] and every t [ 0 , 1 ] .
The Hermite–Hadamard inequality is the utmost important and extensively used result involving convex functions [2]. The most familiar inequality related to the integral mean of a convex function is stated as
Ω ϕ 1 + ϕ 2 2 1 ϕ 2 ϕ 1 ϕ 1 ϕ 2 Ω ( t ) d t Ω ( ϕ 1 ) + Ω ( ϕ 2 ) 2
where Ω : I is a convex function and ϕ 1 , ϕ 2 I with ϕ 1 < ϕ 2 .
Mathematicians have puzzled about how to give estimates for some midpoint and trapezoid differences, where the concept of classical derivatives has been insufficient for years. This curiosity has also spurred mathematicians to embark on a new search for the practical uses for their theories that classical analysis lacks. This quest has led to the discovery of fractional derivative and integral operators, which has sped up research on fractional analysis.
U.S. Kirmaci proved the following midpoint inequality for differentiable convex functions in [3].
Theorem 1.
Let Ω : [ μ , ν ] be differentiable on μ , ν . If | Ω ( t ) | is convex on [ μ , ν ] , then
Ω μ + ν 2 1 ν μ μ ν Ω ( t ) d t ( ν μ ) ( | Ω ( μ ) | + | Ω ( ν ) | ) 8 .
In [4], F. Qi and B. Y. Xi presented a new inequality for differentiable convex functions called the Bullen inequality, which can be described as
Theorem 2.
Let Ω : μ , ν be a differentiable function on μ , ν . If | Ω ( t ) | is integrable and convex on μ , ν , we attain the following identity:
1 2 Ω μ + ν 2 + Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ ν Ω t d t ν μ 16 Ω ( μ ) + Ω ( ν ) .
Due to their extensive examination in the literature, researchers have concentrated on inequalities and convex functions [5,6,7,8,9]. The concept of “calculus without limits”, sometimes known as “quantum calculus”, is an infinitesimal one without constraints. The study of quantum theory is crucial to mathematics and related fields. Mathematicians turned their attention to q -calculus, which had previously been used in physics, philosophy, cryptology, computer science, and mechanics, to study the theory of inequalities, numerical theory, fundamental hyper-geometric functions, and orthogonal polynomials (see [10,11,12,13]); a lot of research has been done in this area recently. The credit for the creation of this field goes to Euler, who deployed the q -parameter to Newton’s investigation of infinite series. Jackson was the one to introduce the q -calculus, according to [10]. As the first phase of his symmetrical study in the nineteenth century, Jackson created q -definite integrals. Tariboon first introduced the   μ D q -difference operator in 2013 [14].
Firstly, in this research article, we will establish general q -parameterized identity. Then, by employing this identity against convex functions, we attain new quantum variants of Mid-point, Simpson, Trapezoid, and Bullen-type inequalities. With the particular selection of q 1 , we can recapture the above inequalities in limiting calculus.

2. Some Basics of q -Calculus

In the present section, we recall concepts of q -derivatives, q -integrals, and related results:
Definition 2
([14]). If Ω : μ , ν , the   μ q -derivative of Ω at ϕ 1 μ , ν is defined as
  μ D q Ω ϕ 1 = Ω ϕ 1 Ω q ϕ 1 + 1 q μ 1 q ϕ 1 μ , ϕ 1 μ .
If ϕ 1 = μ , we define   μ D q ϕ μ = lim ϕ 1 μ   μ D q ϕ ϕ 1 if it exists and is finite.
In [15], the notion of q -Riemann integral was demonstrated in terms of Jackson q -integral on μ , ν :
μ ϕ 1 Ω t   μ d q t = 1 q ϕ 1 μ = 0 q Ω q ϕ 1 + 1 q μ , ϕ 1 μ , ν .
Definition 3.
If μ = 0 in (5), then 0 ϕ 1 Ω t   0 d q t = 0 ϕ 1 Ω t d q t ,
where: 0 ϕ 1 Ω t d q t is q -definite integral on 0 , ϕ 1 and defined as [13]
0 ϕ 1 Ω t   0 d q t = 0 ϕ 1 Ω t d q t = 1 q ϕ 1 = 0 q Ω q ϕ 1 .
If c μ , ϕ 1 , then the q -definite integral on c , ϕ 1 is expressed as:
c ϕ 1 Ω t   μ d q t = μ ϕ 1 Ω t   μ d q t μ c Ω t   μ d q t .
In order to solve differential equations, integral inequalities are quite useful to estimate bounds. Numerous researchers have looked into how integral inequality can be used in both classical and quantum calculus to explore new useful possibilities. Since mathematical inequality’s significance has long been understood, inequalities like Hermite–Hadamard, Jensen, Ostrowski, and Hölder were frequently utilized in quantum calculus. Tariboon and Ntouyas described the q -derivative and q -integral of ongoing work at intervals and confirmed some of its features in 2013 [14]. Numerous well-known inequalities, including those based on Hermite–Hadamard, trapezoid, Ostrowski, Cauchy–Bunyakovsky–Schwarz, Gruss, and Gruss–Cebyvsev, have been examined for q -calculus in [15]. In 2020, Bermudo et al. [16] explained new q -derivative and q -integral for continuous work on a regular basis cost   ν q -calculus, while the previous one is called   μ q -calculus. In [17], Alp et al. proved some Midpoint-type inequalities for   μ q -integrals. Noor et al. established some inequalities of trapezoid type for   μ q -integrals in [18]. On the other hand, Budak et al. present several midpoint and trapezoid type inequalities for   ν q -integrals in [19,20]. In [21], Budak et al. proved some Simpson–Newton type inequalities by using the concept of quantum integrals. Many mathematicians have conducted research in the area of quantum calculus; the interested reader can check [17,22,23,24]. Recently in [25], q -calculus has been used to define positive operators involving Bézier bases. In [17], several variants of q -Hermite–Hadamard inequalities were established by utilizing the idea of support line for convex functions. They also provided the corrected version of q -Hermite–Hadamard inequality given as follows:
Let Ω : μ , ν be a convex function on μ , ν ; we have
Ω q μ + ν 1 + q 1 ν μ μ ν Ω t   μ d q t q Ω μ + Ω ν 1 + q .
Also, another useful variant was given in [17] as follows:
Ω μ + ν 2 ( 1 q ) ( ν μ ) 2 ( 1 + q ) Ω μ + ν 2 1 ν μ μ ν Ω t   μ d q t q Ω μ + Ω ν 1 + q .
Later, Bermudo et al. in [16] presented another picture of the q -Hermite–Hadamard inequality considering   ν q -integral as follows:
Theorem 3.
For a convex function Ω : μ , ν , the following inequalities hold for q 0 , 1 :
Ω μ + q ν 1 + q 1 ν μ μ ν Ω t   ν d q t Ω μ + q Ω ν 1 + q
and
Ω μ + ν 2 1 2 ν μ μ ν Ω t   μ d q t + μ ν Ω t   ν d q t Ω μ + Ω ν 2 .
In [26], M. A. Ali et al. proved the following new version of quantum Hermite–Hadamard inequality involving   μ q and   ν q -integrals.
Theorem 4.
If Ω : [ μ , ν ] is a convex function, then we have
Ω μ + ν 2 1 ν μ μ μ + ν 2 Ω ( t )   μ d q t + μ + ν 2 ν Ω ( t )   ν d q t Ω ( μ ) + Ω ( ν ) 2 .
In [17], the authors established the following midpoint inequalities for q -differentiable convex functions.
Theorem 5.
Let Ω : [ μ , ν ] be a q -differentiable on μ , ν . If | μ D q Ω ( x ) | is convex on [ μ , ν ] , then the following inequality holds for q 0 , 1 :
Ω q μ + ν 1 + q 1 ν μ μ ν Ω t   μ d q t q ν μ 1 + q 3 1 + q + q 2 3   μ D q Ω ν + 2 q 2 + 2 q 1   μ D q Ω μ .
After that, M. A. Noor et al. [18] proved some new trapezoidal inequalities for q -differentiable convex functions.
Theorem 6.
Let Ω : [ μ , ν ] be q -differentiable on μ , ν . If | μ D q Ω ( x ) | is convex on [ μ , ν ] , then following inequality holds for q 0 , 1 :
q Ω μ + Ω ν 1 + q 1 ν μ μ ν Ω t   μ d q t q 2 ν μ 1 + q 4 1 + q + q 2 1 + 4 q + q 2   μ D q Ω ν + 1 + 3 q 2 + 2 q 3   μ D q Ω μ .
Very recently, H. Budak established midpoint and trapezoidal-type inequalities for q -differentiable convex functions.
Theorem 7
([19]). Let Ω : [ μ , ν ] be q -differentiable on μ , ν . If | ν D q Ω ( x ) | is convex on [ μ , ν ] , then the following inequality holds for q 0 , 1 :
Ω μ + q ν 1 + q 1 ν μ μ ν Ω t   ν d q t q ν μ 1 + q 3 1 + q + q 2 3   ν D q Ω μ + 2 q 2 + 2 q 1   ν D q Ω ν
and
Ω μ + q Ω ν 1 + q 1 ν μ μ ν Ω t   ν d q t q 2 ν μ 1 + q 4 1 + q + q 2 1 + 4 q + q 2   ν D q Ω μ + 1 + 3 q 2 + 2 q 3   ν D q Ω ν .
The following notations will be frequently used:
q = i = 0 1 q i = 1 + q + q 2 + + q 1
and
1 t q = t , q = i = 0 1 1 q i t ,
Lemma 1
([17]). The following equality holds:
μ ϕ 1 t μ α   μ d q t = ϕ 1 μ α + 1 α + 1 q ,
for α { 1 } .
Lemma 2
([27]). The following equality holds:
1 2 q 1 ( 1 q t ) q d q t = 1 1 2 q q + 1 + 1 q .
In [28,29], the authors provide q -integration by parts as follows:
Lemma 3.
For continuous functions h , Ω : [ μ , ν ] R , the following equality holds:
0 c h ( t )   μ D q Ω ( t ν + ( 1 t ) μ ) 0 d q t = h ( t ) Ω ( t ν + ( 1 t ) μ ) ν μ 0 c 1 ν μ 0 c Ω ( q t ν + ( 1 q t ) μ ) 0 D q h ( t ) 0 d q t .
Lemma 4.
For continuous functions h , Ω : [ μ , ν ] R , the following equality holds:
0 c h ( t ) ν D q Ω ( t μ + ( 1 t ) ν )   0 d q t = 1 ν μ 0 c Ω ( q t μ + ( 1 q t ) ν ) 0 D q h ( t ) 0 d q t h ( t ) Ω ( t μ + ( 1 t ) ν ) ν μ 0 c .
Finding novel parameterized quantum inequalities with convex derivatives is the main objective of this study. The findings were then calculated using Hölder’s inequality and Power Mean inequality. Several exceptional cases have been proven to justify disparities in the literature.

3. Parameterized Quantum Inequalities

We firstly prove the following lemma which is required for our main results.
Lemma 5.
Let Ω : μ , ν be a q -differentiable function on μ , ν . If   μ D q Ω and   ν D q Ω are continuous and integrable on μ , ν , we attain the following identity:
ν μ 4 0 1 ( λ q t )   ν D q Ω t 2 μ + 2 t 2 ν d q t + 0 1 ( q t λ )   μ D q Ω t 2 ν + 2 t 2 μ d q t = ( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t
for q ( 0 , 1 ) and λ R .
Proof. 
ν μ 4 0 1 ( λ q t )   ν D q Ω t 2 μ + 2 t 2 ν d q t + 0 1 ( q t λ )   μ D q Ω t 2 ν + 2 t 2 μ d q t = ν μ 4 [ E 1 + E 2 ]
Calculate the value of E 1 by using Lemma 4; we have
E 1 = 0 1 ( λ q t )   ν D q Ω t 2 μ + 2 t 2 ν d q t = 0 1 ( λ q t )   ν D q Ω μ + ν 2 t + 1 t ν d q t = ( λ q t ) Ω μ + ν 2 t + ( 1 t ) ν ν μ + ν 2 | 1 0 + 1 ν μ + ν 2 0 1 ( q ) Ω μ + ν 2 q t + ( 1 q t ) ν d q t = 2 ν μ ( q λ ) Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) + 2 q ν μ 0 1 Ω μ + ν 2 q t + ( 1 q t ) ν d q t = 2 ν μ ( q λ ) Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) 2 q ν μ ( 1 q ) n = 0 q n Ω μ + ν 2 q n + 1 + ( 1 q n + 1 ) ν = 2 ν μ ( q λ ) Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) 2 ν μ ( 1 q ) m = 0 q m Ω μ + ν 2 q m + ( 1 q m ) ν Ω μ + ν 2 = 2 ( 1 λ ) ν μ Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) 2 ν μ ( 1 q ) m = 0 q m Ω μ + ν 2 q m + ( 1 q m ) ν = 2 ( 1 λ ) ν μ Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) 4 ( ν μ ) 2 μ + ν 2 ν Ω t   ν d q t .
Similarly, by Lemma 3, we obtain
E 2 = 0 1 ( q t λ )   μ D q Ω t 2 ν + 2 t 2 μ d q t = 0 1 ( q t λ )   μ D q Ω μ + ν 2 t + 1 t μ d q t = ( q t λ ) Ω μ + ν 2 t + ( 1 t ) μ μ + ν 2 μ | 0 1 1 μ + ν 2 μ 0 1 q Ω μ + ν 2 q t + ( 1 q t ) μ d q t = 2 ν μ ( q λ ) Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) 2 ν μ ( 1 q ) n = 0 q n + 1 Ω μ + ν 2 q n + 1 + ( 1 q n + 1 ) μ = 2 ν μ ( q λ ) Ω μ + ν 2 + 2 λ ν μ Ω ( μ ) 2 ν μ ( 1 q ) m = 0 q m Ω μ + ν 2 q m + ( 1 q m ) μ Ω μ + ν 2 = 2 ( 1 λ ) ν μ Ω μ + ν 2 + 2 λ ν μ Ω ( μ ) 2 ν μ ( 1 q ) m = 0 q m Ω μ + ν 2 q m + ( 1 q m ) ν = 2 ( 1 λ ) ν μ Ω μ + ν 2 + 2 λ ν μ Ω ( ν ) 4 ( ν μ ) 2 μ μ + ν 2 Ω t   μ d q t .
Putting the values of E 1 and E 2 in (18), we obtain the desire result. □
Corollary 1.
By setting q 1 in Lemma 5, we have
ν μ 4 0 1 ( λ t ) Ω t 2 μ + 2 t 2 ν d t + 0 1 ( t λ ) Ω t 2 ν + 2 t 2 μ d t = ( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ ν Ω t d t .
Remark 1. 
(i)  If we choose λ = 1 in Lemma 5, we obtain Lemma 4.1 of [26].
(ii) If we choose λ = 1 2 in Lemma 5, we obtain Lemma 4 of [30].
Theorem 8.
Let the assumptions of Lemma 5 hold. Then for q ( 0 , 1 ) and λ 0 , 1 , we have the following inequality:
( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 Ω 1 q , λ   ν D q Ω ( μ ) +   μ D q Ω ( ν ) + Ω 2 q , λ   ν D q Ω ( ν ) +   μ D q Ω ( μ ) ,
where
Ω 1 q , λ = 1 2 0 1 λ q t t d q t = 2 λ 3 + q [ 2 ] q λ [ 3 ] q 2 [ 2 ] q [ 3 ] q , 0 λ q ; λ [ 3 ] q q [ 2 ] q 2 [ 2 ] q [ 3 ] q , λ > q ,
and
Ω 2 q , λ = 0 1 q t λ 2 t 2 d q t = 2 λ 2 + q λ [ 2 ] q [ 2 ] q 2 λ 3 + q [ 2 ] q λ [ 3 ] q 2 [ 2 ] q [ 3 ] q , 0 λ q ; 2 q + 1 2 [ 2 ] q λ 2 q 3 + q 2 + q 2 [ 2 ] q [ 3 ] q , λ > q .
Proof. 
Taking modulus on Lemma 5, we obtain
( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 0 1 λ q t   ν D q Ω t 2 μ + 2 t 2 ν d q t + 0 1 q t λ   μ D q Ω t 2 ν + 2 t 2 μ d q t ν μ 4 [ 0 1 λ q t t 2   ν D q Ω ( μ ) + 2 t 2   ν D q Ω ( ν ) d q t + 0 1 q t λ t 2   μ D q Ω ( ν ) + 2 t 2   μ D q Ω ( μ ) d q t ] ,
by using simple calculations, we obtain the required result. □
Remark 2.
If we choose λ = 0 in Theorem 8, then we have the following midpoint-type inequality:
Ω μ + ν 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t q ν μ 8 [ 3 ] q [ 2 ] q [ 2 ] q   ν D q Ω ( μ ) +   μ D q Ω ( ν ) + [ 3 ] q + q 2   ν D q Ω ( ν ) +   μ D q Ω ( μ )
which is proved by Ali et al. in [26].
Remark 3.
If we choose λ = 1 in Theorem 8, then we have the following trapezoid-type inequality:
Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 8 [ 2 ] q [ 3 ] q   ν D q Ω ( μ ) +   μ D q Ω ( ν ) + [ 3 ] q + q + q 2   ν D q Ω ( ν ) +   μ D q Ω ( μ )
which is proved by Ali et al. in [26].
Remark 4.
If we choose λ = 1 2 in Theorem 8, then we have the following Bullen-type inequality:
1 2 Ω μ + ν 2 + Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 Ω 1 q , 1 2   ν D q Ω ( μ ) +   μ D q Ω ( ν ) + Ω 2 q , 1 2   ν D q Ω ( ν ) +   μ D q Ω ( μ ) ,
where
Ω 1 q , 1 2 = 1 2 0 1 1 2 q t t d q t = 2 q 2 + 2 q 1 8 [ 2 ] q [ 3 ] q , q 1 2 ; 1 q q 2 4 [ 2 ] q [ 3 ] q , 0 < q < 1 2 ,
and
Ω 2 q , 1 2 = 0 1 q t 1 2 2 t 2 d q t = 4 q 3 + 2 q 2 + 2 q + 1 8 [ 2 ] q [ 3 ] q , q 1 2 ; 1 + q + q 2 2 q 3 4 [ 2 ] q [ 3 ] q , 0 < q < 1 2
which is proved by Wannalookkhee et al. in [30].
Remark 5.
If we choose λ = 1 2 and q 1 in Theorem 8, then we have the inequality in (3).
Remark 6.
If we choose λ = 1 3 in Theorem 8, then we have the following Simpson-type inequality:
1 6 Ω ( μ ) + 4 Ω μ + ν 2 + Ω ( ν ) 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 Ω 1 q , 1 3   ν D q Ω ( μ ) +   μ D q Ω ( ν ) + Ω 2 q , 1 3   ν D q Ω ( ν ) +   μ D q Ω ( μ ) ,
where
Ω 1 q , 1 3 = 1 2 0 1 1 3 q t t d q t = 18 q 2 + 18 q 7 54 [ 2 ] q [ 3 ] q , q 1 3 ; 1 2 q 2 q q 6 [ 2 ] q [ 3 ] q , 0 < q < 1 3 ,
and
Ω 2 q , 1 3 = 0 1 q t 1 3 2 t 2 d q t = 36 q 3 + 12 q 2 + 12 q + 1 54 [ 2 ] q [ 3 ] q , q 1 3 ; 1 4 q 3 6 [ 2 ] q [ 3 ] q , 0 < q < 1 3 .
Theorem 9.
Let the assumptions of Lemma 5 hold. Then for q ( 0 , 1 ) , 1 r 1 + 1 r 2 = 1 and λ 0 , 1 , we have the following inequality:
( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4   q , λ 1 r 1 1 2 [ 2 ] q 1 r 2 [   ν D q Ω ( μ ) q + ( 2 q + 1 )   ν D q Ω ( ν ) r 2 1 r 2 +   μ D q Ω ( ν ) q + ( 2 q + 1 )   μ D q Ω ( μ ) r 2 1 r 2 ] ,
where
  q , λ = 0 1 λ q t r 1 d q t
Proof. 
Using Hölder inequality on Lemma 5, we obtain
( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 0 1 λ q t r 1 d q t 1 r 1   ν D q Ω t 2 μ + 2 t 2 ν d q t r 2 1 r 2 + ν μ 4 0 1 q t λ r 1 d q t 1 r 1   μ D q Ω t 2 ν + 2 t 2 μ d q t r 2 1 r 2 ν μ 4 0 1 λ q t r 1 d q t 1 r 2 0 1 t 2   ν D q Ω ( μ ) r 2 + 2 t 2   ν D q Ω ( ν ) r 2 d q t 1 r 2 + ν μ 4 0 1 λ q t r 1 d q t 1 r 1 0 1 t 2   μ D q Ω ( ν ) r 2 + 2 t 2   μ D q Ω ( μ ) r 2 d q t 1 r 2 ν μ 4   q , λ 1 r 1 1 2 [ 2 ] q 1 r 2 [   ν D q Ω ( μ ) q + ( 2 q + 1 )   ν D q Ω ( ν ) r 2 1 r 2 +   μ D q Ω ( ν ) r 2 + ( 2 q + 1 )   μ D q Ω ( μ ) r 2 1 r 2 ] ,
which completes the proof. □
Remark 7.
If we choose λ = 0 in Theorem 9, then we have the following midpoint-type inequality:
Ω μ + ν 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t q ( ν μ ) 4 [ r 1 + 1 ] q 1 r 1 1 2 [ 2 ] q 1 r 2 [   ν D q Ω ( μ ) r 2 + ( 2 q + 1 )   ν D q Ω ( ν ) r 2 1 r 2 +   μ D q Ω ( ν ) r 2 + ( 2 q + 1 )   μ D q Ω ( μ ) r 2 1 r 2 ] ,
which is proved by Ali et al. in [26].
Remark 8.
If we choose λ = 1 in Theorem 9, then we have the following trapezoid-type inequality:
Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4   q , 1 1 r 1 1 2 [ 2 ] q 1 r 2 [   ν D q Ω ( μ ) r 2 + ( 2 q + 1 )   ν D q Ω ( ν ) r 2 1 r 2 +   μ D q Ω ( ν ) r 2 + ( 2 q + 1 )   μ D q Ω ( μ ) r 2 1 r 2 ] ,
where
  q , 1 = 0 1 1 q t r 1 d q t
which is proved by Ali et al. in [26].
Remark 9.
If we choose λ = 1 2 in Theorem 9, then we have the following Bullen-type inequality:
1 2 Ω μ + ν 2 + Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4   q , 1 2 1 r 1 1 2 [ 2 ] q 1 r 2 [   ν D q Ω ( μ ) r 2 + ( 2 q + 1 )   ν D q Ω ( ν ) r 2 1 r 2 +   μ D q Ω ( ν ) r 2 + ( 2 q + 1 )   μ D q Ω ( μ ) r 2 1 r 2 ] ,
where
  q , 1 2 = 0 1 1 2 q t r 1 d q t
which is proved by Wannalookkhee et al. in [30].
Remark 10.
If we choose λ = 1 2 and q 1 in Theorem 9, then we obtain Corollary 3 of [30].
Remark 11.
If we choose λ = 1 3 in Theorem 9, then we have the following Simpson-type inequality:
1 6 Ω ( μ ) + 4 Ω μ + ν 2 + Ω ( ν ) 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4   q , 1 3 1 r 1 1 2 [ 2 ] q 1 r 2 [   ν D q Ω ( μ ) r 2 + ( 2 q + 1 )   ν D q Ω ( ν ) r 2 1 r 2 +   μ D q Ω ( ν ) r 2 + ( 2 q + 1 )   μ D q Ω ( μ ) r 2 1 r 2 ] ,
where
  q , 1 3 = 0 1 1 3 q t r 1 d q t
Theorem 10.
Let the assumptions of Lemma 5 hold. Then for q ( 0 , 1 ) and λ 0 , 1 , we have the following inequality:
( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 Ω 3 q , λ 1 1 r 2 [ Ω 1 q , λ   ν D q Ω ( μ ) r 2 + Ω 2 q , λ   μ D q Ω ( ν ) r 2 1 r 2 + Ω 1 q , λ   ν D q Ω ( ν ) r 2 + Ω 2 q , λ   μ D q Ω ( μ ) r 2 1 r 2 ] ,
where
Ω 3 q , λ = 0 1 λ q t d q t = 2 λ 2 + q [ 2 ] q λ , 0 λ q ; λ q [ 2 ] q , λ > q ,
Proof. 
Using Power Mean inequality on Lemma 5, we obtain
( 1 λ ) Ω μ + ν 2 + λ Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 0 1 λ q t d q t 1 1 r 2 0 1 λ q t   ν D q Ω t 2 μ + 2 t 2 ν r 2 d q t 1 r 2 + ν μ 4 0 1 q t λ d q t 1 1 r 2 0 1 q t λ   μ D q Ω t 2 ν + 2 t 2 μ r 2 d q t 1 r 2 ν μ 4 0 1 λ q t d q t 1 1 r 2 0 1 λ q t t 2   ν D q Ω ( μ ) r 2 + 2 t 2   ν D q Ω ( ν ) r 2 d q t 1 r 2 + ν μ 4 0 1 λ q t d q t 1 1 r 2 0 1 λ q t t 2   μ D q Ω ( ν ) r 2 + 2 t 2   μ D q Ω ( μ ) r 2 d q t 1 r 2 ν μ 4 Ω 3 q , λ 1 1 r 2 [ Ω 1 q , λ   ν D q Ω ( μ ) r 2 + Ω 2 q , λ   μ D q Ω ( ν ) r 2 1 r 2 + Ω 1 q , λ   ν D q Ω ( ν ) r 2 + Ω 2 q , λ   μ D q Ω ( μ ) r 2 1 r 2 ] ,
which completes the proof. □
Remark 12.
If we choose λ = 0 in Theorem 10, then we have the following midpoint-type inequality:
Ω μ + ν 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 q [ 2 ] q 1 1 r 2 [ q 2 [ 3 ] q   ν D q Ω ( μ ) r 2 + 2 q 3 + q 2 + q 2 [ 2 ] q [ 3 ] q   μ D q Ω ( ν ) r 2 1 r 2 + q 2 [ 3 ] q   ν D q Ω ( ν ) r 2 + 2 q 3 + q 2 + q 2 [ 2 ] q [ 3 ] q   μ D q Ω ( μ ) r 2 1 r 2 ]
which is proved by Ali et al. in [26].
Remark 13.
If we choose λ = 1 in Theorem 10, then we have the following trapezoid-type inequality:
Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 1 [ 2 ] q 1 1 r 2 [ 1 2 [ 2 ] q [ 3 ] q   ν D q Ω ( μ ) r 2 + q [ 3 ] q   μ D q Ω ( ν ) r 2 1 r 2 + 1 2 [ 2 ] q [ 3 ] q   ν D q Ω ( ν ) r 2 + q [ 3 ] q   μ D q Ω ( μ ) r 2 1 r 2 ]
which is proved by Ali et al. in [26].
Remark 14.
If we choose λ = 1 2 in Theorem 10, then we have the following Bullen-type inequality:
1 2 Ω μ + ν 2 + Ω ( μ ) + Ω ( ν ) 2 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 q 2 [ 2 ] q 1 1 r 2 [ Ω 1 q , 1 2   ν D q Ω ( μ ) r 2 + Ω 2 q , 1 2   μ D q Ω ( ν ) r 2 1 r 2 + Ω 1 q , 1 2   ν D q Ω ( ν ) r 2 + Ω 2 q , 1 2   μ D q Ω ( μ ) r 2 1 r 2 ]
where
Ω 1 q , 1 2 = 1 2 0 1 1 2 q t t d q t = 2 q 2 + 2 q 1 8 [ 2 ] q [ 3 ] q , q 1 2 ; 1 q q 2 4 [ 2 ] q [ 3 ] q , 0 < q < 1 2 ,
and
Ω 2 q , 1 2 = 0 1 q t 1 2 2 t 2 d q t = 4 q 3 + 2 q 2 + 2 q + 1 8 [ 2 ] q [ 3 ] q , q 1 2 ; 1 + q + q 2 2 q 3 4 [ 2 ] q [ 3 ] q , 0 < q < 1 2
which is proved by Wannalookkhee et al. in [30].
Remark 15.
If we choose λ = 1 2 and q 1 in Theorem 10, then we obtain Corollary 4 of [30].
Remark 16.
If we choose λ = 1 3 in Theorem 10, then we have the following Simpson-type inequality:
1 6 Ω ( μ ) + 4 Ω μ + ν 2 + Ω ( ν ) 1 ( ν μ ) μ μ + ν 2 Ω t   μ d q t + μ + ν 2 ν Ω t   ν d q t ν μ 4 6 q 1 9 [ 2 ] q 1 1 r 2 [ Ω 1 q , 1 3   ν D q Ω ( μ ) r 2 + Ω 2 q , 1 3   μ D q Ω ( ν ) r 2 1 r 2 + Ω 1 q , 1 3   ν D q Ω ( ν ) r 2 + Ω 2 q , 1 3   μ D q Ω ( μ ) r 2 1 r 2 ]
where
Ω 1 q , 1 3 = 1 2 0 1 1 3 q t t   d q t = 18 q 2 + 18 q 7 54 [ 2 ] q [ 3 ] q , q 1 3 ; 1 2 q 2 q q 6 [ 2 ] q [ 3 ] q , 0 < q < 1 3 ,
and
Ω 2 q , 1 3 = 0 1 q t 1 3 2 t 2 d q t = 36 q 3 + 12 q 2 + 12 q + 1 54 [ 2 ] q [ 3 ] q , q 1 3 ; 1 4 q 3 6 [ 2 ] q [ 3 ] q , 0 < q < 1 3 .

4. Concluding Remarks

We will sum up our findings by saying that some novel estimates of Midpoint, Simpson, Trapezoid, and Bullen-type inequalities are obtained for convex functions. We also illustrate that the findings of this research represent a significant generalization of previously published related results. In future research, by using strong and uniform convexity, researchers can also find new bounds. By utilizing strong convexities, we may improve bounds obtained for our Quadrature quantum estimations. Moreover, we can extend the idea by taking into account the ( p , q ) -calculus, which will provide further insight to such studies to explore. It is necessary to state that by choosing q 1 in our primary results, our results turned into classical calculus. We feel it is a fascinating and novel topic for scholars who can achieve analogous inequalities by using different types of convexities.

Author Contributions

Conceptualization, S.I.B. and M.A.A.; funding acquisition, X.Z.; investigation, M.U. and H.B.; methodology, X.Z. and M.U.; validation, H.B.; visualization, S.I.B. and H.B.; writing—original draft, S.I.B. and M.U.; writing—review and editing, X.Z., H.B. and M.A.A. All authors have read and agreed to the published version of the manuscript.

Funding

This research project is supported by the Natural Science Foundation of Anhui Province Higher School (KJ2020A0780, KJ2021A1154, 2022AH051859, 2022AH051864).

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Not applicable.

Conflicts of Interest

The authors declare no conflict of interest.

References

  1. Mitrinović, D.S.; Pečarić, J.E.; Fink, A.M. Classical and New Inequalities in Analysis, Mathematics and Its Applications; East European Series 61; Kluwer Academic Publishers Group: Dordrecht, The Netherlands, 1993. [Google Scholar]
  2. Dragomir, S.S.; Pearce, C.E.M. Selected Topics on Hermite-Hadamard Inequalities and Applications; RGMIA Monographs; Victoria University: Footscray, Australia, 2000. [Google Scholar]
  3. 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]
  4. Qi, F.; Xi, B.Y. Some Hermite–Hadamard type inequalities for differentiable convex functions and applications. Hacet. J. Math. Stat. 2013, 42, 243–257. [Google Scholar]
  5. Butt, S.I.; Pečarić, J. Popoviciu’S Inequality for n-Convex Functions; Lap Lambert Academic Publishing: Sunnyvale, CA, USA, 2018; ISBN 978-3-659-81905-6. [Google Scholar]
  6. Agarwal, P.; Dragomir, S.S.; Jleli, M.; Samet, B. (Eds.) Advances in Mathematical Inequalities and Applications; Springer: Singapore, 2018. [Google Scholar]
  7. Ali, S.; Mubeen, S.; Ali, R.S.; Rahman, G.; Morsy, A.; Nisar, K.S.; Purohit, S.D.; Zakarya, M. Dynamical significance of generalized fractional integral inequalities via convexity. AIMS Math. 2021, 6, 9705–9730. [Google Scholar] [CrossRef]
  8. Saker, S.H.; Zakarya, M.; AlNemer, G.; Rezk, H.M. Structure of a generalized class of weights satisfy weighted reverse Hölder’s inequality. J. Inequal. Appl. 2023, 2023, 76. [Google Scholar] [CrossRef]
  9. Zakarya, M.; Saied, A.I.; Ali, M.; Rezk, H.M.; Kenawy, M.R. Novel Integral Inequalities on Nabla Time Scales with C-Monotonic Functions. Symmetry 2023, 15, 1248. [Google Scholar] [CrossRef]
  10. Ernst, T. The History of q-Calculus and New Method; Department of Mathematics, Uppsala University: Uppsala, Sweden, 2000. [Google Scholar]
  11. Gauchman, H. Integral Inequalities in q-Calculus. Comput. Math. Appl. 2004, 47, 281–300. [Google Scholar] [CrossRef] [Green Version]
  12. Jackson, F.H. On a q-Definite Integrals. Q. J. Pure Appl. Math. 1910, 41, 193–203. [Google Scholar]
  13. Kac, V.; Cheung, P. Quantum Calculus Universitext; Springer: New York, NY, USA, 2002. [Google Scholar]
  14. Tariboon, J.; Ntouyas, S.K. Quantum Calculus on Finite Intervals and Applications to Impulsive Difference Equations. Adv. Differ. Equ. 2013, 2013, 282. [Google Scholar] [CrossRef] [Green Version]
  15. Tariboon, J.; Ntouyas, S.K. Quantum Integral Inequalities on finite Intervals. J. Inequal. Appl. 2014, 2014, 121. [Google Scholar] [CrossRef] [Green Version]
  16. Bermudo, S.; Kórus, P.; Valdes, J.E.N. On q-Hermite-Hadamard Inequalities for General Convex Functions. Acta Math. Hung. 2020, 162, 364–374. [Google Scholar] [CrossRef]
  17. Alp, N.; Sarikaya, M.Z.; Kunt, M.; İşcan, İ. q-Hermite Hadamard inequalities and quantum estimates for midpoint type inequalities via convex and quasi-convex functions. J. King Saud Univ. Sci. 2018, 30, 193–203. [Google Scholar]
  18. Noor, M.A.; Noor, K.I.; Awan, M.U. Some quantum estimates for Hermite-Hadamard inequalities. Appl. Math. Comput. 2015, 251, 675–679. [Google Scholar] [CrossRef]
  19. Budak, H. Some trapezoid and midpoint type inequalities for newly defined quantum integrals. Proyecc. J. Math. 2021, 40, 199–215. [Google Scholar]
  20. Butt, S.I.; Budak, H.; Nonlaopon, K. New Variants of Quantum Midpoint-Type Inequalities. Symmetry 2022, 14, 2599. [Google Scholar] [CrossRef]
  21. Budak, H.; Erden, S.; Ali, M.A. Simpson’s and Newton’s Type Inequalities for Convex Functions via Newly Defined Quantum Integrals. Math. Methods Appl. Sci. 2020, 44, 378–390. [Google Scholar]
  22. Ali, M.A.; Budak, H.; Abbas, M.; Chu, Y.M. Quantum Hermite–Hadamard-Type Inequalities for Functions with Convex Absolute Values of Second qν-Derivatives. Adv. Differ. Equ. 2021, 7, 1–12. [Google Scholar]
  23. Rashid, S.; Butt, S.I.; Kanwal, S.; Ahmad, H.; Wang, M. Quantum integral inequalities with respect to Raina’s function via coordinated generalized ψ-convex functions with applications. J. Funct. Space 2021, 2021, 6631474. [Google Scholar] [CrossRef]
  24. Khan, M.A.; Noor, N.; Nwaeze, E.R.; Chu, Y.M. Quantum Hermite-Hadamard Inequality by Means of a Green Function. Adv. Differ. Equ. 2020, 2020, 99. [Google Scholar] [CrossRef]
  25. Cheng, W.T.; Nasiruzzaman, M.; Mohiuddine, S.A. Stancu-Type Generalized q-Bernstein-Kantorovich Operators Involving Bézier Bases. Mathematics 2022, 10, 2057. [Google Scholar]
  26. Ali, M.A.; Budak, H.; Fećkan, M.; Khan, S. A new version of q-Hermite–Hadamard’s midpoint and trapezoid type inequalities for convex functions Math. Slovaca 2023, 73, 369–386. [Google Scholar] [CrossRef]
  27. Alp, N.; Budak, H.; Erden, S.; Sarikaya, M.Z. New bounds for q-midpoint-type inequalities via twice q-differentiable functions on quantum calculus. Soft Comput. 2022, 19, 10321–10329. [Google Scholar] [CrossRef]
  28. Soontharanon, J.; Ali, M.A.; Budak, H.; Nonlaopon, K.; Abdullah, Z. Simpson’s and Newton’s inequalities for (α,m)-convex functions via quantum calculus. Symmetry 2022, 14, 736. [Google Scholar] [CrossRef]
  29. Sial, I.B.; Mei, S.; Nonlaopon, M.A.A.K. On some generalized Simpson’s and Newton’s inequalities for (α,m)-convex functions in q-calculus. Mathematics 2021, 9, 3266. [Google Scholar] [CrossRef]
  30. Wannalookkhee, F.; Nonlaopon, K.; Sarikaya, M.Z.; Budak, H.; Ali, M. Some new q-Bullen type inequalities for q-differentiable convex functions. Mathematics, 2023; in press. [Google Scholar]
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Zuo, X.; Butt, S.I.; Umar, M.; Budak, H.; Ali, M.A. Novel q-Differentiable Inequalities. Symmetry 2023, 15, 1576. https://doi.org/10.3390/sym15081576

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Zuo X, Butt SI, Umar M, Budak H, Ali MA. Novel q-Differentiable Inequalities. Symmetry. 2023; 15(8):1576. https://doi.org/10.3390/sym15081576

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Zuo, Xuewu, Saad Ihsan Butt, Muhammad Umar, Hüseyin Budak, and Muhammad Aamir Ali. 2023. "Novel q-Differentiable Inequalities" Symmetry 15, no. 8: 1576. https://doi.org/10.3390/sym15081576

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