Existence theorem for periodic solutions of higher order nonlinear differential equations

[摘要] We study the existence of periodic solutions to differential equations of the form L(x) + g(t, x, x',..., x((m))) = f(t) with L(x) = x((m)) + a(m-1)x((m-1)) + ... + a(1)x'. (C) 1997 Academic Press.

[发布日期] 1997-12-15