Symmetry Methods for Solving Differential Equations

A special issue of Mathematical and Computational Applications (ISSN 2297-8747).

Deadline for manuscript submissions: 26 July 2024 | Viewed by 2506

Special Issue Editor


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Guest Editor
Professor Emeritus, Department of Mechanical Engineering, Manisa Celal Bayar University, 45140 Manisa, Turkey
Interests: perturbation methods; perturbation-iteration algorithms; symmetries of differential equations; approximate symmetries; analytical and numerical solutions of differential equations; root-finding algorithms; nonlinear vibrations; non-Newtonian fluid mechanics; nonlinear dynamics; heat transfer; mathematical education

Special Issue Information

Dear Colleagues,

Symmetry Analysis is a systematic method of solving differential equations which has been widely applied to many mathematical models in search of analytical solutions. The results of ad-hoc methods can be combined and classified within the context of symmetries of differential equations.

The aim of this Special Issue is to collect high-quality work and provide a dissemination of recent results on the topic. Lie Group Theory, Noether Symmetries, and the Exterior Calculus approach are widely used symmetry methods. Contributions to the development of these methods are within the scope of this Special Issue. Studies on new theories combining symmetry with perturbation methods, such as the approximate symmetry methods, are welcome. Classical Lie Point Symmetries, Equivalence Transformations, Group Classifications, Non-Classical Symmetries, and Lie–Backlund Symmetries are other techniques that may be considered. Papers employing special group transformations (Scaling, Translational, Spiral), as well as other similarity transformations, are also acceptable. Papers on symmetries should address applications of the method to solving ordinary or partial differential equations. Papers that employ methods for solving applied problems in Physics, Chemistry, Biology, Engineering, Administrative Sciences, and other social sciences in the form of differential equations are highly encouraged. Abstract Lie Group Theory papers without any evidence of application to differential equations are discouraged.

Prof. Dr. Mehmet Pakdemirli
Guest Editor

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Published Papers (2 papers)

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13 pages, 273 KiB  
Article
Complex Connections between Symmetry and Singularity Analysis
by Asghar Qadir
Math. Comput. Appl. 2024, 29(1), 15; https://doi.org/10.3390/mca29010015 - 19 Feb 2024
Viewed by 983
Abstract
In this paper, it is noted that three apparently disparate areas of mathematics—singularity analysis, complex symmetry analysis and the distributional representation of special functions—have a basic commonality in the underlying methods used. The insights obtained from the first of these provides a much-needed [...] Read more.
In this paper, it is noted that three apparently disparate areas of mathematics—singularity analysis, complex symmetry analysis and the distributional representation of special functions—have a basic commonality in the underlying methods used. The insights obtained from the first of these provides a much-needed explanation for the effectiveness of the latter two. The consequent explanations are provided in the form of two theorems and their corollaries. Full article
(This article belongs to the Special Issue Symmetry Methods for Solving Differential Equations)
38 pages, 665 KiB  
Article
Lie Symmetry Classification, Optimal System, and Conservation Laws of Damped Klein–Gordon Equation with Power Law Non-Linearity
by Fiazuddin D. Zaman, Fazal M. Mahomed and Faiza Arif
Math. Comput. Appl. 2023, 28(5), 96; https://doi.org/10.3390/mca28050096 - 12 Sep 2023
Viewed by 1088
Abstract
We used the classical Lie symmetry method to study the damped Klein–Gordon equation (Kge) with power law non-linearity utt+α(u)ut=(uβux)x+f(u) [...] Read more.
We used the classical Lie symmetry method to study the damped Klein–Gordon equation (Kge) with power law non-linearity utt+α(u)ut=(uβux)x+f(u). We carried out a complete Lie symmetry classification by finding forms for α(u) and f(u). This led to various cases. Corresponding to each case, we obtained one-dimensional optimal systems of subalgebras. Using the subalgebras, we reduced the Kge to ordinary differential equations and determined some invariant solutions. Furthermore, we obtained conservation laws using the partial Lagrangian approach. Full article
(This article belongs to the Special Issue Symmetry Methods for Solving Differential Equations)
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