Remarks on the existence of nonoscillatory solutions of half-linear ordinary differential equations, I

Abstract

We consider the half-linear differential equation of the form \[(p(t)|x'|^{\alpha}\mathrm{sgn} x')' + q(t)|x|^{\alpha}\mathrm{sgn} x = 0, \quad t\geq t_{0},\] under the assumption \(\int_{t_{0}}^{\infty}p(s)^{-1/\alpha}ds =\infty\). It is shown that if a certain condition is satisfied, then the above equation has a pair of nonoscillatory solutions with specific asymptotic behavior as \(t \to \infty\).

Keywords

• asymptotic behavior
• nonoscillatory solution
• half-linear differential equation
• hardy-type inequality