Noether, Partial Noether Operators and First Integrals for the Coupled Lane-Emden System

Mathematical and Computational Applications

Muatjetjeja, Ben¹ 

关键词: Lagrangian;    Noether;    partial Noether operators;    First integrals;    Lane- Emden system;    Lie group methods;   

DOI  :  10.3390/mca15030325

学科分类：计算数学

来源: mdpi

【 摘 要 】

Systems of Lane-Emden equations arise in the modelling of several physical phenomena, such as pattern formation, population evolution and chemical reactions. In this paper we construct Noether and partial Noether operators corresponding to a Lagrangian and a partial Lagrangian for a coupled Lane-Emden system. Then the first integrals with respect to Noether and partial Noether operators are obtained for the Lane-Emden system under consideration. We show that the first integrals for both the Noether and partial Noether operators are the same. However, the gauge function is different in certain cases.

【 授权许可】

CC BY