Small solutions of the damped half-linear oscillator with step function coefficients

Dénes, Attila and Székely, László: Small solutions of the damped half-linear oscillator with step function coefficients. Electronic journal of qualitative theory of differential equations 46. pp. 1-13. (2018)

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Abstract

In this paper we consider the damped half-linear oscillator x 00|x 0 n−1 + c(t)|x 0 n−1 x 0 + a(t)|x| n−1 x = 0, n ∈ R We give a sufficient condition guaranteeing the existence of a small solution, that is a non-trivial solution which tends to 0 as t tends to infinity, in the case when both damping and elasticity coefficients are step functions. With our main theorem we not just generalize the corresponding theorem for the linear case n = 1, but we even sharpen Hatvani’s theorem concerning the undamped half-linear differential equation. Keywords: small solution, asymptotic stability, half-linear differential equation, step function coefficients, damping, difference equations.

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