摘要
系统(E):X=ψ(y),y=-g(x)─f(x)y极限环的唯一性索光俭,陈秀东(长春师范学院,130032)(大连理工大学,116024)定理(E)如标题所示,且满足:则(E)至多存在一个极限环,若存在它是不稳定环。先证几个引理。由上单调,记其反函...
We obtain a uniqueness condition for the existence of limit cycle。Suppose(x,y)andsatisfy equation systemunique intersection ,wherethen system(E)has at most one limit cycle(not stable)