摘要
We have proved that Liéard equation with F（x） = -F（-x） has at most n limit cycles. Under the condition, an affirmative answer to A.Lins, W.de Melo and C.C.Pugh＇s conjecture is given. Keywords
We have proved that Liéard equation with F（x） = -F（-x） has at most n limit cycles. Under the condition, an affirmative answer to A.Lins, W.de Melo and C.C.Pugh＇s conjecture is given. Keywords
