Zobrazeno 1 - 10
of 1 183
pro vyhledávání: '"symmetry reduction"'
Autor:
Müller, Ulrich, author, de la Flor, Gemma, author
Publikováno v:
Symmetry Relationships between Crystal Structures : Applications of Crystallographic Group Theory in Crystal Chemistry, 2024, ill.
Externí odkaz:
https://doi.org/10.1093/oso/9780192858320.003.0013
Autor:
Wei Chen
Publikováno v:
Electronic Journal of Differential Equations, Vol 2023, Iss 82,, Pp 1-16 (2023)
Externí odkaz:
https://doaj.org/article/854c1f7813bb41259a192df9b56d4a8c
Autor:
José F. Cariñena
Publikováno v:
Symmetry, Vol 16, Iss 5, p 568 (2024)
A geometric approach to the integrability and reduction of dynamical systems, both when dealing with systems of differential equations and in classical physics, is developed from a modern perspective. The main ingredients of this analysis are infinit
Externí odkaz:
https://doaj.org/article/18f2cd34deb1446db4ddc2453903075d
Publikováno v:
Results in Physics, Vol 54, Iss , Pp 107132- (2023)
An extended (2+1)-dimensional shallow water wave (SWW) model governs the evolution of nonlinear shallow water wave propagation in two spatial and a temporal coordinate. The multi-linear variable separation approach is applied to the SWW equation. The
Externí odkaz:
https://doaj.org/article/1e0ad8e56bb74a7fa63d3d03ac531a69
Publikováno v:
Communications in Analysis and Mechanics, Vol 15, Iss 2, Pp 1-23 (2023)
We study the reduction by symmetry for optimality conditions in optimal control problems of left-invariant affine multi-agent control systems, with partial symmetry breaking cost functions for continuous-time and discrete-time systems. We recast the
Externí odkaz:
https://doaj.org/article/0c1cd23b50284e54bfbe79c10abdff4d
Publikováno v:
Journal of Taibah University for Science, Vol 16, Iss 1, Pp 104-110 (2022)
In this paper, a modified Korteweg–de Vries equation with a quartic nonlinear term in two-electron temperature plasmas is studied. Firstly, the symmetries are constructed using the generalized symmetry method. In addition, the potential equation is
Externí odkaz:
https://doaj.org/article/b32ada01631a41a1a8d2677ea4840270
Publikováno v:
Partial Differential Equations in Applied Mathematics, Vol 7, Iss , Pp 100501- (2023)
This work presents a generalized hyper-elastic rod wave (gHRW) equation from the Lie symmetry method’s standpoint. The equation illustrates dispersive waves generating in hyper-elastic rods. Using multiplier approach we find conserved vectors of th
Externí odkaz:
https://doaj.org/article/0915a4b72f9f4ad7a141068acfd34b02
Autor:
Ivan Tsyfra, Wojciech Rzeszut
Publikováno v:
Mathematical Biosciences and Engineering, Vol 19, Iss 7, Pp 6962-6984 (2022)
We study symmetry reductions of nonlinear partial differential equations that can be used for describing diffusion processes in heterogeneous medium. We find ansatzes reducing these equations to systems of ordinary differential equations. The ansatze
Externí odkaz:
https://doaj.org/article/074b9353195041cd8f382e6abf8edc7b
Publikováno v:
Ain Shams Engineering Journal, Vol 12, Iss 4, Pp 3919-3930 (2021)
In this paper, we study a fourth-order nonlinear symmetric regularized long-wave equation which arises in several physical applications including ion sound waves in plasma. This model also describes nonlinear ion-acoustic and space-charge waves. Lie
Externí odkaz:
https://doaj.org/article/c1db8cdede554d25a4c9e0f0a0029aa8