Partial Differential Equations and Symmetry

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

Deadline for manuscript submissions: closed (31 March 2026) | Viewed by 666

Special Issue Editors


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Guest Editor
School of Mathematical Sciences, Bohai University, Jinzhou 121013, China
Interests: soliton and integrable system; mathematical mechanization and mathematical physics; fractional differential equation and its applications
Special Issues, Collections and Topics in MDPI journals
School of Educational Sciences, Bohai University, Jinzhou 121013, China
Interests: soliton and integrable system; fractional calculus
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Partial differential equations, including special types of differential-integral, lattice (semi-discrete or fully discrete), and fractional-order equations, are very important and have been widely used in many fields such as engineering, physics, fluid mechanics, finance, biology, etc. Some famous partial differential equations include the following: Lagrange equation, Laplace equation, Poisson equation, Maxwell’s equations, Helmholtz equation, Navier–Stokes equation, Schrödinger equation, heat equation, wave equation, reaction–diffusion equation, soliton equation, etc.

This Special Issue aims to enhance our understanding of various analytical and numerical methods, symmetry analysis, and solutions for partial differential equations, as well as the symmetry that arises in solutions. The goal of this Special Issue is to explore new results and directions in partial differential equations and symmetry, highlight the important role of symmetry in partial differential equations, and establish new theoretical foundations for related field applications.

The scope of this Special Issue includes, but is not limited to, the following: symmetry method, analytical method, Lie group method, symmetry analysis, numerical algorithm, symmetry property, separation of variables method, symmetry reduction, exact solution, approximate solution, symmetry structure, spectral method, Fourier transform, Laplace transform, inverse scattering transform, finite difference method, finite element method, Riemann–Hilbert method, Darboux transformation, Bilinear method, function expansion method, Green’s function method, characteristic line method, variational method, integral transformation method, physics informed neural method, and other methods related to symmetry for partial differential equations.

We look forward to receiving your contributions.

Prof. Dr. Sheng Zhang
Dr. Bo Xu
Guest Editors

Manuscript Submission Information

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Keywords

  • partial differential equations
  • analytical method and numerical algorithm
  • symmetry analysis
  • inverse scattering transform
  • finite difference method
  • Riemann–Hilbert method
  • function expansion method
  • integral transformation method
  • physics-informed neural method

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Published Papers (1 paper)

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Research

25 pages, 1879 KB  
Article
Enhancing the Applicability of a Parametric Sixth-Order Convergent Method for Solving Nonlinear Equations
by Ioannis K. Argyros, Stepan Shakhno and Mykhailo Shakhov
Symmetry 2026, 18(3), 410; https://doi.org/10.3390/sym18030410 - 26 Feb 2026
Viewed by 259
Abstract
The applicability of a highly efficient sixth-order convergent method, originally proposed by Kansal et al., is extended in this study to a Banach space setting. The initial development of this method relied upon Taylor series expansions in Rn and the assumption that [...] Read more.
The applicability of a highly efficient sixth-order convergent method, originally proposed by Kansal et al., is extended in this study to a Banach space setting. The initial development of this method relied upon Taylor series expansions in Rn and the assumption that the nonlinear operator is sufficiently differentiable. This vague condition implies the existence of high-order derivatives that are not actually utilized by the algorithm. This study transcends these limitations by establishing convergence based solely on generalized continuity conditions of the first Fréchet derivative. By dispensing with these strong smoothness requirements, the domain of applicability is significantly widened. We derive computable radii for the ball of convergence and establish error bounds under local analysis. Furthermore, a rigorous semi-local convergence analysis is presented, a feature previously absent in the literature for this specific scheme, utilizing a majorizing sequence technique to guarantee the existence and uniqueness of the solution. The theoretical results are validated through numerical experiments, which demonstrate that the method converges even when the standard sufficiently differentiable conditions are violated. Full article
(This article belongs to the Special Issue Partial Differential Equations and Symmetry)
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