Browsing by Subject "large contraction"
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Item type:Article, Access status: Open Access , Existence of periodic solutions for totally nonlinear neutral differential equations with functional delay(2012) Yankson, ErnestWe use a variant of Krasnoselskii’s fixed point theorem by T.A. Burton to show that the nonlinear neutral differential equation with functional delay $x'(t) = -a(t)h(x(t)) +c(t)x'(t-g(t)) + q(t,x(t) x(t-g(t)))$ has a periodic solution.