Title of article :
The center conditions for a Liénard System
Author/Authors :
L.A. Cherkas، نويسنده , , V.G. Romanovski، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2006
Abstract :
We obtain necessary and sufficient coefficient conditions for a center at the origin for a Liénard system with nonlinearities of degree six. The necessity of the conditions is derived from the first seven focus quantities and their sufficiency is proved by Cherkasʹs method.
Keywords :
Local integrability , Center problem , Liénard system , Polynomial systems
Journal title :
Computers and Mathematics with Applications
Journal title :
Computers and Mathematics with Applications
