摘要
作者研究了多项式Linard方程具有非退化中心的条件,运用消元法给出了计算此条件的一个算法.
Necessary and sufficient conditions are studied for the coeffcients of polynomials f(x ) and g (x) such that the Liénard equation x + f(x) x^· + g (x) = 0 has non-degenerate centers, a algorithm to calculate the center conditions with elimination theory is presented.
出处
《四川大学学报(自然科学版)》
CAS
CSCD
北大核心
2008年第5期1051-1056,共6页
Journal of Sichuan University(Natural Science Edition)