Oscillation and nonoscillation for impulsive dynamic equations on certain time scales

We discuss the existence of oscillatory and nonoscillatory solutions for first-order impul-sive dynamic equations on time scales with certain restrictions on the points of impulse. We will rely on the nonlinear alternative of Leray-Schauder type combined with a lower and upper solutions method. Copyright © 2006 Mouffak Benchohra et al. This is an open access article distributed un-der the Creative Commons Attribution License, which permits unrestricted use, distribu-tion, and reproduction in any medium, provided the original work is properly cited. 1