Relationship between symmetries andconservation laws

AH Kara, FM Mahomed - International Journal of Theoretical Physics, 2000‏ - Springer
The fundamental relation between Lie-Bäcklund symmetry generators andconservation laws
of an arbitrary differential equation is derived without regardto a Lagrangian formulation of …

Noether-type symmetries and conservation laws via partial Lagrangians

AH Kara, FM Mahomed - Nonlinear Dynamics, 2006‏ - Springer
We show how one can construct conservation laws of Euler-Lagrange-type equations via
Noether-type symmetry operators associated with what we term partial Lagrangians. This is …

Conserved vectors and solutions of the two-dimensional potential KP equation

CM Khalique, MYT Lephoko - Open Physics, 2023‏ - degruyter.com
This article investigates the potential Kadomtsev–Petviashvili (pKP) equation, which
describes the evolution of small-amplitude nonlinear long waves with slow transverse …

Perturbation to symmetry and adiabatic invariants of discrete nonholonomic nonconservative mechanical system

P Wang - Nonlinear Dynamics, 2012‏ - Springer
Perturbation to Noether symmetries and adiabatic invariants of discrete nonholonomic
nonconservative mechanical systems on an uniform lattice are investigated. Firstly, we …

Group theoretic methods for approximate invariants and Lagrangians for some classes of y ″+ εF (t) y′+ y= f (y, y′)

T Feroze, AH Kara - International journal of non-linear mechanics, 2002‏ - Elsevier
Some recent results on the Lie symmetry generators of equations with a small parameter
and the relationship between symmetries and conservation laws for such equations are …

[HTML][HTML] Approximate Noether-type symmetries and conservation laws via partial Lagrangians for PDEs with a small parameter

AG Johnpillai, AH Kara, FM Mahomed - Journal of Computational and …, 2009‏ - Elsevier
We show how one can construct approximate conservation laws of approximate Euler-type
equations via approximate Noether-type symmetry operators associated with partial …

Variational formulation of approximate symmetries and conservation laws

AG Johnpillai, AH Kara - International Journal of Theoretical Physics, 2001‏ - Springer
We show how the conserved vectors and associated (approximate) Lie symmetry generators
of a partial differential equation with a small parameter can be utilized to construct …

Second-order approximate symmetries of the geodesic equations for the Reissner-Nordström metric and re-scaling of energy of a test particle

I Hussain, FM Mahomed, A Qadir - SIGMA. Symmetry, Integrability and …, 2007‏ - emis.de
Following the use of approximate symmetries for the Schwarzschild spacetime by AH Kara,
FM Mahomed and A. Qadir (Nonlinear Dynam., to appear), we have investigated the exact …

Approximate symmetries and conservation laws for mechanical systems described by mixed derivative perturbed PDEs

A Shamaoon, P Agarwal… - Žurnal Ìnženernih …, 2023‏ - iris.uninettunouniversity.net
This article focuses on develo** and applying approximation techniques to derive
conservation laws for the Timoshenko–Prescott mixed derivatives perturbed partial …

Energy of the Bardeen model using an approximate symmetry method

M Sharif, S Waheed - Physica Scripta, 2011‏ - iopscience.iop.org
In this paper, we investigate the energy problem in general relativity using approximate Lie
symmetry methods for differential equations. This procedure is applied to the Bardeen model …