Symmetry in Numerical Solutions

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

Deadline for manuscript submissions: 31 March 2026 | Viewed by 405

Special Issue Editor

Department of Mathematics, West Chester University of Pennsylvania, West Chester, PA 19383, USA
Interests: scientific (parallel) computing algorithms; numerical methods for solving ordinary and partial differential equation models; interface problems; bioheat equations; cardiac physiology
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Special Issue Information

Dear Colleagues,

Many physical systems—such as those governed by conservation of energy, momentum, and angular momentum—possess inherent symmetries. A central challenge in developing numerical algorithms and schemes to solve these continuous systems is the preservation of geometric or algebraic invariants (e.g., conservation laws, time reversibility, and rotational invariance) during discretization. Standard methods often introduce discretization errors that break symmetry, leading to numerical instabilities, unphysical artifacts, or long-term drift in conserved quantities.

This Special Issue emphasizes the development of accurate, stable, and state-of-the-art methods for solving systems arising in celestial mechanics, molecular dynamics, quantum physics, and related fields, with the goal of ensuring physically faithful solutions in long-term simulations.

Dr. Chuan Li
Guest Editor

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Keywords

  • conservation
  • geometric integration
  • symplectic
  • invariants
  • discretization
  • structure preserving
  • stability
  • Hamiltonian
  • time-reversibility
  • long-term simulation

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Published Papers (1 paper)

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Research

22 pages, 306 KB  
Article
On a Semi-Discrete Model of Maxwell’s Equations in Three and Two Dimensions
by Volodymyr Sushch
Symmetry 2025, 17(12), 2123; https://doi.org/10.3390/sym17122123 - 10 Dec 2025
Viewed by 250
Abstract
In this paper, we develop a geometric, structure-preserving semi-discrete formulation of Maxwell’s equations in both three- and two-dimensional settings within the framework of discrete exterior calculus. The proposed approach preserves the intrinsic geometric and topological structures of the continuous theory while providing a [...] Read more.
In this paper, we develop a geometric, structure-preserving semi-discrete formulation of Maxwell’s equations in both three- and two-dimensional settings within the framework of discrete exterior calculus. The proposed approach preserves the intrinsic geometric and topological structures of the continuous theory while providing a consistent spatial discretization. We analyze the essential properties of the proposed semi-discrete model and compare them with those of the classical Maxwell’s equations. As a representative example, the framework is applied to a combinatorial two-dimensional torus, where the semi-discrete Maxwell system reduces to a set of first-order linear ordinary differential equations. An explicit expression for the general solution of this system is also derived. Full article
(This article belongs to the Special Issue Symmetry in Numerical Solutions)
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