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Periodic solutions for a kind of Rayleigh equation with two deviating arguments. (English) Zbl 1114.34051
Summary: We use the coincidence degree theory to establish new results on the existence of T-periodic solutions for the Rayleigh equation with two deviating arguments of the form
$$x^{\prime\prime }+f(x^{\prime }(t))+g_{1}(t,x(t-\tau _{1}(t)))+g_{2}(t,x(t-\tau _{2}(t)))=p(t)$$.

##### MSC:
 34K13 Periodic solutions to functional-differential equations 47H11 Degree theory for nonlinear operators
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##### References:
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