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88 Results Found

  • Article
  • Open Access
4 Citations
1,579 Views
17 Pages

Exploring Generalized Hardy-Type Inequalities via Nabla Calculus on Time Scales

  • Haytham M. Rezk,
  • Mahmoud I. Mohammed,
  • Oluwafemi Samson Balogun and
  • Ahmed I. Saied

27 August 2023

In this research, we aim to explore generalizations of Hardy-type inequalities using nabla Hölder’s inequality, nabla Jensen’s inequality, chain rule on nabla calculus and leveraging the properties of convex and submultiplicative fun...

  • Article
  • Open Access
7 Citations
1,859 Views
15 Pages

Generalized Inequalities of Hilbert-Type on Time Scales Nabla Calculus

  • Mohammed Zakarya,
  • Ghada AlNemer,
  • Ahmed I. Saied,
  • Roqia Butush,
  • Omar Bazighifan and
  • Haytham M. Rezk

24 July 2022

In this paper, we prove some new generalized inequalities of Hilbert-type on time scales nabla calculus by applying Hölder’s inequality, Young’s inequality, and Jensen’s inequality. Symmetrical properties play an essential role...

  • Article
  • Open Access
3 Citations
1,606 Views
19 Pages

Novel Hardy-Type Inequalities with Submultiplicative Functions on Time Scales Using Delta Calculus

  • Haytham M. Rezk,
  • Ahmed I. Saied,
  • Maha Ali,
  • Belal A. Glalah and
  • Mohammed Zakarya

16 August 2023

In this study, we apply Hölder’s inequality, Jensen’s inequality, chain rule and the properties of convex functions and submultiplicative functions to develop an innovative category of dynamic Hardy-type inequalities on time scales d...

  • Article
  • Open Access
30 Citations
2,293 Views
16 Pages

Fractional Reverse Coposn’s Inequalities via Conformable Calculus on Time Scales

  • Mohammed Zakarya,
  • Mohamed Altanji,
  • Ghada AlNemer,
  • Hoda A. Abd El-Hamid,
  • Clemente Cesarano and
  • Haytham M. Rezk

25 March 2021

This paper provides novel generalizations by considering the generalized conformable fractional integrals for reverse Copson’s type inequalities on time scales. The main results will be proved using a general algebraic inequality, chain rule, Hölder’...

  • Article
  • Open Access
13 Citations
1,800 Views
13 Pages

Some New Generalized Inequalities of Hardy Type Involving Several Functions on Time Scale Nabla Calculus

  • A. I. Saied,
  • Ghada ALNemer,
  • Mohammed Zakarya,
  • Clemente Cesarano and
  • Haytham M. Rezk

22 November 2022

In this article, we establish several new generalized Hardy-type inequalities involving several functions on time-scale nabla calculus. Furthermore, we derive some new multidimensional Hardy-type inequalities on time scales nabla calculus. The main r...

  • Article
  • Open Access
1,686 Views
16 Pages

Hardy–Leindler, Yang and Hwang Inequalities for Functions of Several Variables via Time Scale Calculus

  • Ammara Nosheen,
  • Huma Akbar,
  • Maroof Ahmad Sultan,
  • Jae Dong Chung and
  • Nehad Ali Shah

12 April 2022

In this paper, Hardy–Leindler, Hardy–Yang and Hwang type inequalities are extended on time scales calculus. These extensions are depending upon use of symmetric multiple delta integrals. The target is achieved by utilizing some inequaliti...

  • Article
  • Open Access
486 Views
24 Pages

19 September 2025

This work presents new results concerning weighted Hardy-type inequalities within the framework of delta conformable fractional integrals on arbitrary time scales. The proposed approach unifies the treatment of inequalities across continuous and disc...

  • Article
  • Open Access
4 Citations
1,336 Views
13 Pages

Novel Integral Inequalities on Nabla Time Scales with C-Monotonic Functions

  • Mohammed Zakarya,
  • A. I. Saied,
  • Maha Ali,
  • Haytham M. Rezk and
  • Mohammed R. Kenawy

12 June 2023

Through the paper, we present several inequalities involving C-monotonic functions with C≥1, on nabla calculus via time scales. It is known that dynamic inequalities generate many different inequalities in different calculus. The main results will...

  • Article
  • Open Access
13 Citations
4,327 Views
15 Pages

Nabla Fractional Derivative and Fractional Integral on Time Scales

  • Bikash Gogoi,
  • Utpal Kumar Saha,
  • Bipan Hazarika,
  • Delfim F. M. Torres and
  • Hijaz Ahmad

24 November 2021

In this paper, we introduce the nabla fractional derivative and fractional integral on time scales in the Riemann–Liouville sense. We also introduce the nabla fractional derivative in Grünwald–Letnikov sense. Some of the basic proper...

  • Article
  • Open Access
1,571 Views
7 Pages

1 December 2013

Geodesics have a fundamental role in the geometry of curved surfaces, as well as in discrete geometry. We present the time scale analogy of the dynamic data sets parameterized by a tensor product of two times scales. The goal of our study is the find...

  • Article
  • Open Access
1,743 Views
14 Pages

(γ,a)-Nabla Reverse Hardy–Hilbert-Type Inequalities on Time Scales

  • Ahmed A. El-Deeb,
  • Dumitru Baleanu and
  • Jan Awrejcewicz

17 August 2022

In this article, using a (γ,a)-nabla conformable integral on time scales, we study several novel Hilbert-type dynamic inequalities via nabla time scales calculus. Our results generalize various inequalities on time scales, unifying and extendin...

  • Article
  • Open Access
2 Citations
1,226 Views
20 Pages

Generalized Dynamic Inequalities of Copson Type on Time Scales

  • Ahmed M. Ahmed,
  • Ahmed I. Saied,
  • Maha Ali,
  • Mohammed Zakarya and
  • Haytham M. Rezk

1 March 2024

This paper introduces novel generalizations of dynamic inequalities of Copson type within the framework of time scales delta calculus. The proposed generalizations leverage mathematical tools such as Hölder’s inequality, Minkowski’s...

  • Article
  • Open Access
7 Citations
2,291 Views
19 Pages

Some Dynamic Inequalities via Diamond Integrals for Function of Several Variables

  • Muhammad Bilal,
  • Khuram Ali Khan,
  • Hijaz Ahmad,
  • Ammara Nosheen,
  • Khalid Mahmood Awan,
  • Sameh Askar and
  • Mosleh Alharthi

In this paper, Jensen’s inequality and Fubini’s Theorem are extended for the function of several variables via diamond integrals of time scale calculus. These extensions are used to generalize Hardy-type inequalities with general kernels via diamond...

  • Article
  • Open Access
3 Citations
1,491 Views
16 Pages

Some New Bennett–Leindler Type Inequalities via Conformable Fractional Nabla Calculus

  • Ghada AlNemer,
  • Mohammed Zakarya,
  • Roqia Butush and
  • Haytham M. Rezk

18 October 2022

In this article, we prove several new fractional nabla Bennett–Leindler dynamic inequalities with the help of a simple consequence of Keller’s chain rule, integration by parts, mean inequalities and Hölder’s inequality for the...

  • Proceeding Paper
  • Open Access
1 Citations
1,407 Views
7 Pages

In this article, we developed the idea of q-time scale calculus in quantum geometry. It includes the q-time scale integral operators and ∆q-differentials. It analyzes the fundamental principles which follow the calculus of q-time scales co...

  • Feature Paper
  • Article
  • Open Access
47 Citations
6,152 Views
22 Pages

Fractional Derivatives and Integrals: What Are They Needed For?

  • Vasily E. Tarasov and
  • Svetlana S. Tarasova

25 January 2020

The question raised in the title of the article is not philosophical. We do not expect general answers of the form “to describe the reality surrounding us”. The question should actually be formulated as a mathematical problem of applied m...

  • Article
  • Open Access
1 Citations
2,979 Views
9 Pages

In this paper, we present a generalization of Radon’s inequality on dynamic time scale calculus, which is widely studied by many authors and an intrinsic inequality. Further, we present the classical Bergström’s inequality and refine...

  • Article
  • Open Access
2 Citations
1,446 Views
16 Pages

Delta Calculus on Time Scale Formulas That Are Similar to Hilbert-Type Inequalities

  • Haytham M. Rezk,
  • Juan E. Nápoles Valdés,
  • Maha Ali,
  • Ahmed I. Saied and
  • Mohammed Zakarya

28 December 2023

In this article, we establish some new generalized inequalities of the Hilbert-type on time scales’ delta calculus, which can be considered similar to formulas for inequalities of Hilbert type. The major innovation point is to establish some dy...

  • Article
  • Open Access
188 Views
12 Pages

Advanced Generalizations of Weighted Opial-Type Inequalities in the Framework of Time Scale Calculus

  • Nadiah Zafer Al-Shehri,
  • Mohammed M. A. El-Sheikh,
  • Mohammed Zakarya,
  • Hegagi M. Ali,
  • Haytham M. Rezk and
  • Fatma M. Khamis

8 January 2026

This work presents refined and generalized forms of weighted Opial-type inequalities within the framework of time scale calculus. The proofs rely on several algebraic techniques, together with Hölder’s inequality and Keller’s chain r...

  • Article
  • Open Access
2 Citations
1,779 Views
15 Pages

This paper is concerned with some new Hermite-Hadamard inequalities on two types of time scales, Z and Nc,h. Based on the substitution rules, we first prove the discrete Hermite-Hadamard inequalities on Z relating to the midpoint a+b2 and extend them...

  • Article
  • Open Access
6 Citations
1,673 Views
21 Pages

Dynamic Hardy–Copson-Type Inequalities via (γ,a)-Nabla-Conformable Derivatives on Time Scales

  • Ahmed A. El-Deeb,
  • Samer D. Makharesh,
  • Jan Awrejcewicz and
  • Ravi P. Agarwal

5 September 2022

We prove new Hardy–Copson-type (γ,a)-nabla fractional dynamic inequalities on time scales. Our results are proven by using Keller’s chain rule, the integration by parts formula, and the dynamic Hölder inequality on time scales....

  • Article
  • Open Access
1 Citations
1,380 Views
19 Pages

On Some New Dynamic Hilbert-Type Inequalities across Time Scales

  • Mohammed Zakarya,
  • Ahmed I. Saied,
  • Amirah Ayidh I Al-Thaqfan,
  • Maha Ali and
  • Haytham M. Rezk

14 July 2024

In this article, we present some novel dynamic Hilbert-type inequalities within the framework of time scales T. We achieve this by utilizing Hölder’s inequality, the chain rule, and the mean inequality. As specific instances of our finding...

  • Article
  • Open Access
2 Citations
1,398 Views
13 Pages

1 May 2023

We investigated several novel conformable fractional gamma-nabla dynamic Hardy–Hilbert inequalities on time scales in this study. Several continuous inequalities and their corresponding discrete analogues in the literature are combined and expa...

  • Feature Paper
  • Article
  • Open Access
764 Views
21 Pages

9 January 2025

This paper examines fractional multi-time scale stochastic functional differential equations that, in addition, are driven by fractional noises. Based on a specially crafted fixed-point principle for the so-called “local operators”, we pr...

  • Article
  • Open Access
3 Citations
1,085 Views
16 Pages

18 October 2024

This research investigates innovative extensions of Hardy-type inequalities through the use of nabla Hölder’s and nabla Jensen’s inequalities, combined with the nabla chain rule and the characteristics of convex and submultiplicative...

  • Article
  • Open Access
1 Citations
1,815 Views
11 Pages

31 October 2021

Building on the work of Josip Pečarić in 2013 and 1982 and on the work of Srivastava in 2017. We prove some new α-conformable dynamic inequalities of Steffensen-type on time scales. In the case when α=1, we obtain some well-known time scale inequalit...

  • Article
  • Open Access
2 Citations
1,852 Views
17 Pages

Diamond Alpha Hilbert-Type Inequalities on Time Scales

  • Ahmed A. El-Deeb,
  • Dumitru Baleanu,
  • Sameh S. Askar,
  • Clemente Cesarano and
  • Ahmed Abdeldaim

In this article, we will prove some new diamond alpha Hilbert-type dynamic inequalities on time scales which are defined as a linear combination of the nabla and delta integrals. These inequalities extend some known dynamic inequalities on time scale...

  • Article
  • Open Access
1 Citations
1,648 Views
14 Pages

On Some Important Class of Dynamic Hilbert’s-Type Inequalities on Time Scales

  • Hassan M. El-Owaidy,
  • Ahmed A. El-Deeb,
  • Samer D. Makharesh,
  • Dumitru Baleanu and
  • Clemente Cesarano

7 July 2022

In this important work, we discuss some novel Hilbert-type dynamic inequalities on time scales. The inequalities investigated here generalize several known dynamic inequalities on time scales and unify and extend some continuous inequalities and thei...

  • Article
  • Open Access
727 Views
18 Pages

In this work, Noether symmetries and conserved quantities of a non-standard Birkhoffian system based on the Caputo Δ Pfaff–Birkhoff principle on time scales are studied. Firstly, equations of motion for Caputo Δ non-standard Birkhof...

  • Article
  • Open Access
8 Citations
2,014 Views
16 Pages

1 July 2022

In this paper, we extend some Steffensen-type inequalities to time scales by using the diamond-α-dynamic integral. Further, we prove some new Steffensen-type inequalities for convex functions utilizing positive σ-finite measures in time s...

  • Article
  • Open Access
4 Citations
2,202 Views
26 Pages

Generalized Polynomials and Their Unification and Extension to Discrete Calculus

  • Mieczysław Cichoń,
  • Burcu Silindir,
  • Ahmet Yantir and
  • Seçil Gergün

31 August 2023

In this paper, we introduce a comprehensive and expanded framework for generalized calculus and generalized polynomials in discrete calculus. Our focus is on (q;h)-time scales. Our proposed approach encompasses both difference and quantum problems, m...

  • Article
  • Open Access
1,318 Views
19 Pages

Some New Generalizations of Reverse Hilbert-Type Inequalities via Supermultiplicative Functions

  • Haytham M. Rezk,
  • Ahmed I. Saied,
  • Ghada AlNemer and
  • Mohammed Zakarya

30 September 2022

Our work in this paper is based on the reverse Hölder-type dynamic inequalities illustrated by El-Deeb in 2018 and the reverse Hilbert-type dynamic inequalities illustrated by Rezk in 2021 and 2022. With the help of Specht’s ratio, the con...

  • Article
  • Open Access
3 Citations
2,311 Views
11 Pages

Some New Anderson Type h and q Integral Inequalities in Quantum Calculus

  • Munawwar Ali Abbas,
  • Li Chen,
  • Asif R. Khan,
  • Ghulam Muhammad,
  • Bo Sun,
  • Sadaqat Hussain,
  • Javed Hussain and
  • Adeeb Ur Rasool

22 June 2022

The calculus in the absence of limits is known as quantum calculus. With a difference operator, it substitutes the classical derivative, which permits dealing with sets of functions that are non-differentiations. The theory of integral inequality in...

  • Article
  • Open Access
28 Citations
3,213 Views
15 Pages

Some Fractional Dynamic Inequalities of Hardy’s Type via Conformable Calculus

  • Samir Saker,
  • Mohammed Kenawy,
  • Ghada AlNemer and
  • Mohammed Zakarya

16 March 2020

In this article, we prove some new fractional dynamic inequalities on time scales via conformable calculus. By using chain rule and Hölder’s inequality on timescales we establish the main results. When α = 1 we obtain some we...

  • Article
  • Open Access
5 Citations
2,782 Views
15 Pages

In this paper, we propose two fractional-order calculus-based data augmentation methods for audio signals. The first approach is based on fractional differentiation of the Mel scale. By using a randomly selected fractional derivation order, we are wa...

  • Article
  • Open Access
7 Citations
4,965 Views
18 Pages

8 October 2020

Financial time series have a fractal nature that poses challenges for their dynamical characterization. The Dow Jones Industrial Average (DJIA) is one of the most influential financial indices, and due to its importance, it is adopted as a test bed f...

  • Article
  • Open Access
3 Citations
1,427 Views
15 Pages

Inequalities of Ostrowski Type for Functions Whose Derivative Module Is Relatively Convex on Time Scales

  • Haytham M. Rezk,
  • Ahmed I. Saied,
  • Maha Ali,
  • Ghada AlNemer and
  • Mohammed Zakarya

2 April 2024

In this article, we discuss several novel generalized Ostrowski-type inequalities for functions whose derivative module is relatively convex in time scales calculus. Our core findings are proved by using the integration by parts technique, Hölde...

  • Article
  • Open Access
4 Citations
3,003 Views
23 Pages

Generalized Nabla Differentiability and Integrability for Fuzzy Functions on Time Scales

  • R. Leelavathi,
  • G. Suresh Kumar,
  • Ravi P. Agarwal,
  • Chao Wang and
  • M.S.N. Murty

8 June 2020

This paper mainly deals with introducing and studying the properties of generalized nabla differentiability for fuzzy functions on time scales via Hukuhara difference. Further, we obtain embedding results on E n for generalized nabla differen...

  • Feature Paper
  • Article
  • Open Access
13 Citations
9,164 Views
30 Pages

In this article, we survey the sensor network calculus (SensorNC), a framework continuously developed since 2005 to support the predictable design, control and management of large-scale wireless sensor networks with timing constraints. It is rooted i...

  • Article
  • Open Access
3 Citations
1,524 Views
18 Pages

Some New Inverse Hilbert Inequalities on Time Scales

  • Ahmed A. El-Deeb,
  • Samer D. Makharesh and
  • Barakah Almarri

25 October 2022

Several inverse integral inequalities were proved in 2004 by Yong. It is our aim in this paper to extend these inequalities to time scales. Furthermore, we also apply our inequalities to discrete and continuous calculus to obtain some new inequalitie...

  • Review
  • Open Access
15 Citations
3,544 Views
16 Pages

12 June 2020

In this survey paper, we present both some basic properties of the four-parameters Wright function and its applications in Fractional Calculus. For applications in Fractional Calculus, the four-parameters Wright function of the second kind is especia...

  • Article
  • Open Access
7 Citations
3,547 Views
15 Pages

6 April 2021

Fractional calculus-based differential equations were found by previous studies to be promising tools in simulating local-scale anomalous diffusion for pollutants transport in natural geological media (geomedia), but efficient models are still needed...

  • Article
  • Open Access
20 Citations
2,534 Views
22 Pages

Dynamic Hilbert-Type Inequalities with Fenchel-Legendre Transform

  • Ahmed A. El-Deeb,
  • Samer D. Makharesh and
  • Dumitru Baleanu

7 April 2020

Our work is based on the multiple inequalities illustrated in 2020 by Hamiaz and Abuelela. With the help of a Fenchel-Legendre transform, which is used in various problems involving symmetry, we generalize a number of those inequalities to a general...

  • Review
  • Open Access
6 Citations
3,314 Views
64 Pages

11 April 2021

As an effective tool to unify discrete and continuous analysis, time scale calculus have been widely applied to study dynamic systems in both theoretical and practical aspects. In addition to such a classical role of unification, the dynamic equation...

  • Article
  • Open Access
8 Citations
2,738 Views
20 Pages

16 December 2022

The application of fractional calculus in the field of kinetic theory begins with questions raised by Bernoulli, Clausius, and Maxwell about the motion of molecules in gases and liquids. Causality, locality, and determinism underly the early work, wh...

  • Article
  • Open Access
4 Citations
2,663 Views
15 Pages

14 December 2018

In this paper, we present some Ostrowski–Grüss-type inequalities on time scales for functions whose derivatives are bounded by functions for k points via a parameter. The 2D versions of these inequalities are also presented. Our results ge...

  • Article
  • Open Access
1,618 Views
15 Pages

Dynamic Inequalities of Two-Dimensional Hardy Type via Alpha-Conformable Derivatives on Time Scales

  • Ahmed A. El-Deeb,
  • Alaa A. El-Bary,
  • Jan Awrejcewicz and
  • Kamsing Nonlaopon

17 December 2022

We established some new α-conformable dynamic inequalities of Hardy–Knopp type. Some new generalizations of dynamic inequalities of α-conformable Hardy type in two variables on time scales are established. Furthermore, we investigat...

  • Article
  • Open Access
2 Citations
1,496 Views
13 Pages

Diamond-Type Dirac Dynamic System in Mathematical Physics

  • Tuba Gulsen,
  • Ayşe Çiğdem Yar and
  • Emrah Yilmaz

7 March 2024

In order to merge continuous and discrete analyses, a number of dynamic derivative equations have been put out in the process of developing a time-scale calculus. The investigations that incorporated combined dynamic derivatives have led to the propo...

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