Abstract
We present new oscillation criteria for the second order nonlinear dynamic equation [r(t)phi(gamma)(x(Delta)(t))](Delta) + q(0)(t)phi(gamma)(x(g(0)(t))) + integral(b)(a)q(t, s)phi(alpha(s))(x(g(t, s)))Delta zeta(s) = 0 under mild assumptions. Our results generalize and improve some known results for oscillation of second order nonlinear dynamic equations. Several examples are worked out to illustrate the main results.