Title
First Integrals of Two-Dimensional Dynamical Systems via Complex Lagrangian Approach.
Abstract
The aim of the present work is to classify the Noether-like operators of two-dimensional physical systems whose dynamics is governed by a pair of Lane-Emden equations. Considering first-order Lagrangians for these systems, we construct corresponding first integrals. It is seen that for a number of forms of arbitrary functions appearing in the set of equations, the Noether-like operators also fulfill the classical Noether symmetry condition for the pairs of real Lagrangians and the generated first integrals are reminiscent of those we obtain from the complex Lagrangian approach. We also investigate the cases in which the underlying systems are reducible via quadrature. We derive some interesting results about the nonlinear systems under consideration and also find that the algebra of Noether-like operators is Abelian in a few cases.
Year
DOI
Venue
2019
10.3390/sym11101244
SYMMETRY-BASEL
Keywords
Field
DocType
complex Lagrangian approach,coupled Lane-Emden systems,Noether-like operators,first integrals
Abelian group,Nonlinear system,Physical system,Mathematical analysis,Pure mathematics,Dynamical systems theory,Noether's theorem,Operator (computer programming),Quadrature (mathematics),Mathematics,First integrals
Journal
Volume
Issue
Citations 
11
10
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Muhammad Farooq13110.82
Chaudry Masood Khalique27416.95
F. M. Mahomed3105.41