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132 Results Found

  • Review
  • Open Access
5 Citations
1,443 Views
18 Pages

15 October 2024

The quest to reveal the physical essence of the infinitely many symmetries and/or conservation laws that are intrinsic to integrable systems has historically posed a significant challenge at the confluence of physics and mathematics. This scholarly i...

  • Article
  • Open Access
1 Citations
1,583 Views
20 Pages

11 October 2024

In this study, we focus on investigating a novel extended (3+1)-dimensional Kadomtsev–Petviashvili–Boussinesq-like (KPB-like) equation. Initially, we utilized the Lie symmetry method to determine the symmetry generator by considering the...

  • Article
  • Open Access
12 Citations
5,776 Views
26 Pages

7 November 2013

In this paper, we develop a general framework for studying Dirichlet Boundary Value Problems (BVP) for second order symmetric implicit differential systems satisfying the Hartman-Nagumo conditions, as well as a certain non-expandability condition. Th...

  • Article
  • Open Access
1 Citations
1,796 Views
12 Pages

10 November 2021

We investigate the well-known one-dimensional perturbed Gelfand boundary value problem and approximate the values of α0,λ* and λ* such that this problem has a unique solution when 0<α<α0 and λ>0, and has three solutions when α>α0 and λ*&l...

  • Article
  • Open Access
32 Citations
4,690 Views
15 Pages

1 May 2018

Pythagorean fuzzy sets are highly appealing in dealing with uncertainty as they allow for greater flexibility in regards to the membership and non-membership degrees by extending the set of possible values. In this paper, we propose a multi-criteria...

  • Article
  • Open Access
2,900 Views
15 Pages

3 December 2018

This paper is concerned with the radial symmetry weak positive solutions for a class of singular fractional Laplacian. The main results in the paper demonstrate the existence and multiplicity of radial symmetry weak positive solutions by Schwarz sphe...

  • Article
  • Open Access
4 Citations
2,427 Views
27 Pages

2 September 2021

The framework of Baikov–Gazizov–Ibragimov approximate symmetries has proven useful for many examples where a small perturbation of an ordinary or partial differential equation (ODE, PDE) destroys its local exact symmetry group. For the perturbed mode...

  • Article
  • Open Access
4 Citations
4,878 Views
18 Pages

12 July 2013

In this paper, we formulate a supersymmetric extension of the Euler system of equations. We compute a superalgebra of Lie symmetries of the supersymmetric system. Next, we classify the one-dimensional subalgebras of this superalgebra into 49 equivale...

  • Article
  • Open Access
19 Citations
2,406 Views
12 Pages

Effects of M-Truncated Derivative and Multiplicative Noise on the Exact Solutions of the Breaking Soliton Equation

  • Wael W. Mohammed,
  • M. El-Morshedy,
  • Abdelkader Moumen,
  • Ekram E. Ali,
  • M. Benaissa and
  • Ahmed E. Abouelregal

20 January 2023

In this article, the fractional–space stochastic (2+1)-dimensional breaking soliton equation (SFSBSE) is taken into account in the sense of M-Truncated derivative. To get the exact solutions to the SFSBSE, we use the modified F-expansion method...

  • Feature Paper
  • Article
  • Open Access
3 Citations
4,037 Views
12 Pages

9 November 2019

Symmetry in mathematical optimization may create multiple, equivalent solutions. In nonconvex optimization, symmetry can negatively affect algorithm performance, e.g., of branch-and-bound when symmetry induces many equivalent branches. This paper dev...

  • Article
  • Open Access
16 Citations
1,488 Views
15 Pages

Solitary Solutions for the Stochastic Fokas System Found in Monomode Optical Fibers

  • Wael W. Mohammed,
  • Farah M. Al-Askar and
  • Clemente Cesarano

17 July 2023

The stochastic Fokas system (SFS), driven by multiplicative noise in the Itô sense, was investigated in this study. Novel trigonometric, rational, hyperbolic, and elliptic stochastic solutions are found using a modified mapping method. Because...

  • Article
  • Open Access
306 Views
19 Pages

29 November 2025

This paper investigates the reverse space-time nonlocal nonlinear Schrödinger (NNLS) equation, which arises in nonlinear optics, Bose–Einstein condensation, integrable systems, and plasma physics. Several classes of exact solutions are con...

  • Article
  • Open Access
5 Citations
2,008 Views
10 Pages

15 August 2022

In this paper, the Sharma-Tasso-Olver-Burgers (STOB) system is analyzed by the Lie point symmetry method. The hypergeometric wave solution of the STOB equation is derived by symmetry reductions. In the meantime, the consistent tanh expansion (CTE) me...

  • Article
  • Open Access
752 Views
18 Pages

23 July 2025

This paper focuses on the variable coefficients geophysical KdV (VCGKdV) equation, which involves time-dependent perturbation, nonlinearity and dispersion parameters. It is a more realistic model than its constant coefficient counterpart and can be u...

  • Article
  • Open Access
20 Citations
9,683 Views
17 Pages

16 January 2018

The analysis of symmetry is a main principle in natural sciences, especially physics. For network sciences, for example, in social sciences, computer science and data science, only a few small-scale studies of the symmetry of complex real-world graph...

  • Article
  • Open Access
44 Citations
2,099 Views
12 Pages

17 October 2022

In this article, the stochastic Davey–Stewartson equations (SDSEs) forced by multiplicative noise are addressed. We use the mapping method to find new rational, elliptic, hyperbolic and trigonometric functions. In addition, we generalize some p...

  • Article
  • Open Access
2 Citations
1,312 Views
13 Pages

15 June 2024

The field of multiplicative analysis has recently garnered significant attention, particularly in the context of solving multiplicative differential equations (MDEs). The symmetry concept in MDEs facilitates the determination of invariant solutions a...

  • Article
  • Open Access
4 Citations
1,789 Views
16 Pages

Impact of White Noise on the Exact Solutions of the Stochastic Riemann Wave Equation in Quantum Mechanics

  • Wael W. Mohammed,
  • Clemente Cesarano,
  • Doaa Rizk,
  • Elkhateeb S. Aly and
  • Mahmoud El-Morshedy

16 November 2023

In this article, the stochastic Riemann wave equation (SRWE) forced by white noise in the Itô sense is considered. The extended tanh function and mapping methods are applied to obtain new elliptic, rational, hyperbolic, and trigonometric stochastic s...

  • Review
  • Open Access
2 Citations
1,461 Views
25 Pages

5 August 2025

This literature review explores the role of symmetry in thermal sciences, fluid dynamics, and energy applications, emphasizing the theoretical and practical implications. Symmetry is a fundamental tool for simplifying complex problems, enhancing comp...

  • Article
  • Open Access
2 Citations
2,235 Views
21 Pages

An Iteration Function Having Optimal Eighth-Order of Convergence for Multiple Roots and Local Convergence

  • Ramandeep Behl,
  • Ioannis K. Argyros,
  • Michael Argyros,
  • Mehdi Salimi and
  • Arwa Jeza Alsolami

24 August 2020

In the study of dynamics of physical systems an important role is played by symmetry principles. As an example in classical physics, symmetry plays a role in quantum physics, turbulence and similar theoretical models. We end up having to deal with an...

  • Article
  • Open Access
2 Citations
2,075 Views
17 Pages

23 February 2022

A complete algebraic characterization of the first integrals of the Higgins–Selkov, Selkov and Brusellator oscillators is given here. The existence of symmetries sometimes forces the existence of such first integrals. The nonexistence of center...

  • Article
  • Open Access
3 Citations
2,355 Views
14 Pages

Solutions of the Bullough–Dodd Model of Scalar Field through Jacobi-Type Equations

  • Rodica Cimpoiasu,
  • Radu Constantinescu and
  • Alina Streche Pauna

19 August 2021

A technique based on multiple auxiliary equations is used to investigate the traveling wave solutions of the Bullough–Dodd (BD) model of the scalar field. We place the model in a flat and homogeneous space, considering a symmetry reduction to a 2D-no...

  • Article
  • Open Access
17 Citations
1,906 Views
10 Pages

26 May 2023

We study the (3+1)-dimensional stochastic Jimbo–Miwa (SJM) equation induced by multiplicative white noise in the Itô sense. We employ the Riccati equation mapping and He’s semi-inverse techniques to provide trigonometric, hyperbolic...

  • Article
  • Open Access
13 Citations
1,857 Views
22 Pages

14 May 2024

The examination of new (3 + 1)-dimensional wave equations is undertaken in this study. Initially, the identification of the Lie symmetries of the model is carried out through the utilization of the Lie symmetry approach. The commutator and adjoint ta...

  • Article
  • Open Access
3 Citations
1,449 Views
17 Pages

Solving Boundary Value Problems by Sinc Method and Geometric Sinc Method

  • Amer Darweesh,
  • Kamel Al-Khaled and
  • Mohammed Algamara

1 April 2024

This paper introduces an efficient numerical method for approximating solutions to geometric boundary value problems. We propose the multiplicative sinc–Galerkin method, tailored specifically for solving multiplicative differential equations. T...

  • Article
  • Open Access
12 Citations
2,409 Views
9 Pages

5 May 2018

A simplified neutrosophic set (containing interval and single-valued neutrosophic sets) can be used for the expression and application in indeterminate decision-making problems because three elements in the simplified neutrosophic set (including inte...

  • Article
  • Open Access
2 Citations
1,874 Views
26 Pages

23 October 2023

This paper delves into the enhancement of asymptotic and oscillatory behaviors in solutions to even-order neutral differential equations with multiple delays. The main objective is to establish improved inequalities to advance the understanding of os...

  • Article
  • Open Access
10 Citations
2,302 Views
13 Pages

6 November 2020

In this paper, based on critical point theory, we mainly focus on the multiplicity of nontrivial solutions for a nonlinear discrete Dirichlet boundary value problem involving the mean curvature operator. Without imposing the symmetry or oscillating b...

  • Article
  • Open Access
5 Citations
1,609 Views
16 Pages

22 July 2024

This article examines the oscillatory characteristics of a fourth-order Emden–Fowler differential equation, specifically when it includes a sublinear neutral term. Our methodology centers on establishing multiple theorems that introduce innovat...

  • Article
  • Open Access
8 Citations
1,988 Views
27 Pages

A Soliton Solution for the Kadomtsev–Petviashvili Model Using Two Novel Schemes

  • Asghar Ali,
  • Sara Javed,
  • Muhammad Nadeem,
  • Loredana Florentina Iambor and
  • Sorin Mureşan

4 July 2023

Symmetries are crucial to the investigation of nonlinear physical processes, particularly the evaluation of a differential problem in the real world. This study focuses on the investigation of the Kadomtsev–Petviashvili (KP) model within a (3+1...

  • Article
  • Open Access
71 Citations
4,868 Views
15 Pages

20 March 2022

Clustering is a popular data analysis and data mining problem. Symmetry can be considered as a pre-attentive feature, which can improve shapes and objects, as well as reconstruction and recognition. The symmetry-based clustering methods search for cl...

  • Article
  • Open Access
974 Views
13 Pages

21 December 2024

This paper explores the reverse space-time mKdV equation through the application of the Riemann–Hilbert problem. Under the zero boundary condition, we derive the Jost solutions, examine their the analytic and symmetry properties alongside those...

  • Article
  • Open Access
1 Citations
1,164 Views
30 Pages

25 May 2025

Integrated process planning and scheduling (IPPS) is an intricate and vital issue in smart manufacturing, requiring the coordinated optimization of both process plans and production schedules under multiple resource and precedence constraints. This p...

  • Article
  • Open Access
1 Citations
1,261 Views
18 Pages

2 May 2024

The concept of symmetry has played a major role in Hilbert space setting owing to the structure of a complete inner product space. Subsequently, different studies pertaining to symmetry, including symmetric operators, have investigated real Hilbert s...

  • Article
  • Open Access
717 Views
12 Pages

16 October 2025

In this work, we construct a multiple solutions theory based on a membrane shape equation. The membrane shape of a vesicle or a red blood cell is determined using the Zhongcan–Helfrich shape equation. These spherical solutions, which have an id...

  • Article
  • Open Access
11 Citations
1,458 Views
29 Pages

6 July 2024

The paper studies an unsteady equation with quadratic nonlinearity in second derivatives, that occurs in electron magnetohydrodynamics. In mathematics, such PDEs are referred to as parabolic Monge–Ampère equations. An overview of the Mon...

  • Article
  • Open Access
1,871 Views
17 Pages

Comparison Theorems for Oscillation of Higher-Order Neutral Delay Differential Equations

  • Osama Moaaz,
  • Hend Salah,
  • Asma Al-Jaser,
  • Mona Anis and
  • Elmetwally M. Elabbasy

15 July 2024

In this work, we study the oscillatory features of a class of neutral differential equations with multiple delays. We present novel oscillation conditions for this equation by using a comparison method. We create conditions that exclude the positive...

  • Article
  • Open Access
6 Citations
2,468 Views
16 Pages

Reduce-Order Modeling and Higher Order Numerical Solutions for Unsteady Flow and Heat Transfer in Boundary Layer with Internal Heating

  • Muhammad Bilal,
  • Muhammad Safdar,
  • Safia Taj,
  • Amad Zafar,
  • Muhammad Umair Ali and
  • Seung Won Lee

7 December 2022

We obtain similarity transformations to reduce a system of partial differential equations representing the unsteady fluid flow and heat transfer in a boundary layer with heat generation/absorption using Lie symmetry algebra. There exist seven Lie sym...

  • Article
  • Open Access
6 Citations
1,399 Views
28 Pages

Interior Multi-Peak Solutions for a Slightly Subcritical Nonlinear Neumann Equation

  • Mohamed Ben Ayed,
  • Khalil El Mehdi and
  • Fatimetou Mohamed Salem

2 March 2024

In this paper, we consider the nonlinear Neumann problem (Pε): −Δu+V(x)u=K(x)u(n+2)/(n−2)−ε, u>0 in Ω, ∂u/∂ν=0 on ∂Ω, where Ω is a smooth bounded domain in Rn, n≥4, &ep...

  • Article
  • Open Access
1 Citations
1,123 Views
26 Pages

Scheduling Optimization of Emergency Resources to Chemical Industrial Parks Based on Improved Bacterial Foraging Optimization

  • Xiaohui Yan,
  • Yukang Zhang,
  • Junwei Luo,
  • Zhicong Zhang,
  • Liangwei Zhang,
  • Zhengmin Zhang and
  • Shi Cheng

7 February 2025

Emergency resource scheduling is a critical facet of disaster management, particularly within the complex environments of chemical parks. A model with multiple disaster sites, multiple rescue sites, and multiple emergency resources was constructed co...

  • Article
  • Open Access
673 Views
23 Pages

12 May 2025

This study aims to establish new oscillation criteria for solutions of a specific class of functional differential equations. Our findings extend and refine the recently developed criteria for this type of equation by various authors and also encompa...

  • Article
  • Open Access
4 Citations
2,207 Views
18 Pages

22 November 2021

The classical Hopefield neural networks have obvious symmetry, thus the study related to its dynamic behaviors has been widely concerned. This research article is involved with the neutral-type inertial neural networks incorporating multiple delays....

  • Article
  • Open Access
7 Citations
1,739 Views
16 Pages

Dynamics and Soliton Propagation in a Modified Oskolkov Equation: Phase Plot Insights

  • Muhammad Bilal Riaz,
  • Adil Jhangeer,
  • Jan Martinovic and
  • Syeda Sarwat Kazmi

7 December 2023

This study explores the modified Oskolkov equation, which depicts the behavior of the incompressible viscoelastic Kelvin–Voigt fluid. The primary focus of this research lies in several key areas. Firstly, the Lie symmetries of the considered eq...

  • Article
  • Open Access
1,694 Views
22 Pages

5 October 2025

Competitive programming has emerged as a critical benchmark for evaluating large language models (LLMs) in solving algorithmic problems under competitive conditions. Existing methods, such as the Sequential One-Agent Pipeline (SOP) approach, suffer f...

  • Article
  • Open Access
1,229 Views
14 Pages

26 September 2024

In ecological modeling, symmetry can manifest in multiple ways, significantly contributing to our understanding of ecosystem stability, species interactions, and ecological balance. Considering the bloom phenomenon caused by excessive algae in ponds...

  • Article
  • Open Access
26 Citations
3,048 Views
17 Pages

The current work performs a numerical study on periodic motions of the Hill three-body problem. In particular, by computing the stability of its basic planar families we determine vertical self-resonant (VSR) periodic orbits at which families of thre...

  • Article
  • Open Access
1 Citations
2,088 Views
30 Pages

6 July 2021

The existence of multiple solutions to an attitude determination problem impacts the design of estimation schemes, potentially increasing the errors by a significant value. It is therefore essential to identify such cases in any attitude problem. In...

  • Article
  • Open Access
10 Citations
3,926 Views
21 Pages

Rough q-Rung Orthopair Fuzzy Sets and Their Applications in Decision-Making

  • Muhammad Asim Bilal,
  • Muhammad Shabir and
  • Ahmad N. Al-Kenani

23 October 2021

Yager recently introduced the q-rung orthopair fuzzy set to accommodate uncertainty in decision-making problems. A binary relation over dual universes has a vital role in mathematics and information sciences. During this work, we defined upper approx...

  • Article
  • Open Access
340 Views
19 Pages

7 November 2025

This study addresses the complete integrability of a generalized multicomponent version of the first multiplicative Bogoyavlensky lattice with branched dispersion. The analysis is performed using the Hirota bilinear formalism and the periodic reducti...

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