Asymmetric and Symmetric Study on Applied Mathematics in ODE, PDE and FDE Model

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Mathematics".

Deadline for manuscript submissions: closed (15 April 2024) | Viewed by 1985

Special Issue Editors


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Guest Editor
Department of Mathematics, School of Electronics & Information Engineering, Taizhou University, Taizhou 318000, China
Interests: ecological differential dynamical system; neural network system; fractional order dynamical system; functional differential equation; parabolic partial differential equation

Special Issue Information

Dear Colleagues,

Symmetry and asymmetry are common in natural science and engineering technology, and even in social science. The theory and application of differential equations are an important part of Applied Mathematics. The main application field of differential equations in physics. Therefore, the symmetric and asymmetric dynamic characteristics that are common in physics are studied through their corresponding differential equation models. However, the purpose of this Special Issue is to provide a platform for scholars to exchange research work on symmetry and asymmetry in other disciplines besides physical chemistry, such as biological ecosystem, neural network system, epidemic dynamic system, economic and financial dynamic system, etc., by applying the theory and methods of differential equations and dynamic systems. The main objectives and scopes of this Special Issue (including but not limited to) are as follows:

  1. Studies on symmetry and asymmetry in the ODE model;
  2. Studies on symmetry and asymmetry in the PDE model;
  3. Studies on symmetry and asymmetry in the FDE model.

Prof. Dr. Kaihong Zhao
Prof. Dr. Quanxin Zhu
Guest Editors

Manuscript Submission Information

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Keywords

  • biological ecosystem
  • neural network system
  • epidemic dynamic system
  • qualitative and stability
  • symmetry and asymmetry

Published Papers (2 papers)

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Research

13 pages, 7840 KiB  
Article
Stability and Numerical Simulation of a Nonlinear Hadamard Fractional Coupling Laplacian System with Symmetric Periodic Boundary Conditions
by ** **e
Symmetry 2024, 16(6), 774; https://doi.org/10.3390/sym16060774 - 20 Jun 2024
Viewed by 588
Abstract
The Hadamard fractional derivative and integral are important parts of fractional calculus which have been widely used in engineering, biology, neural networks, control theory, and so on. In addition, the periodic boundary conditions are an important class of symmetric two-point boundary conditions for [...] Read more.
The Hadamard fractional derivative and integral are important parts of fractional calculus which have been widely used in engineering, biology, neural networks, control theory, and so on. In addition, the periodic boundary conditions are an important class of symmetric two-point boundary conditions for differential equations and have wide applications. Therefore, this article considers a class of nonlinear Hadamard fractional coupling (p1,p2)-Laplacian systems with periodic boundary value conditions. Based on nonlinear analysis methods and the contraction map** principle, we obtain some new and easily verifiable sufficient criteria for the existence and uniqueness of solutions to this system. Moreover, we further discuss the generalized Ulam–Hyers (GUH) stability of this problem by using some inequality techniques. Finally, three examples and simulations explain the correctness and availability of our main results. Full article
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11 pages, 279 KiB  
Article
Positive Periodic Solutions for a First-Order Nonlinear Neutral Differential Equation with Impulses on Time Scales
by Shihong Zhu and Bo Du
Symmetry 2023, 15(5), 1072; https://doi.org/10.3390/sym15051072 - 12 May 2023
Viewed by 796
Abstract
In this article, we discuss the existence of a positive periodic solution for a first-order nonlinear neutral differential equation with impulses on time scales. Based on the Leggett–Williams fixed-point theorem and Krasnoselskii’s fixed-point theorem, some sufficient conditions are established for the existence of [...] Read more.
In this article, we discuss the existence of a positive periodic solution for a first-order nonlinear neutral differential equation with impulses on time scales. Based on the Leggett–Williams fixed-point theorem and Krasnoselskii’s fixed-point theorem, some sufficient conditions are established for the existence of positive periodic solution. An example is given to show the feasibility and application of the obtained results. Since periodic solutions are solutions with symmetry characteristics, the existence conditions for periodic solutions also imply symmetry. Full article
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