Some new integral criteria for the oscillation of the nonlinear second order differential equation with damped term $y''(t) + p(t)y'(t) + q(t)f(y(t)) = 0$ are given ...

Let Φ(z) = ∑∞ 0 βjz j have radius of convergence $r (0 < r < \infty)$ and no singularities other than poles on the circle |z| = r. A complete solution is ...