Journal
MATHEMATICAL & COMPUTATIONAL APPLICATIONS
Volume 15, Issue 3, Pages 325-333Publisher
ASSOC SCI RES
DOI: 10.3390/mca15030325
Keywords
Lagrangian; Noether and partial Noether operators; First integrals; Lane-Emden system; Lie group methods
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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.
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