Journal of Inequalities and Applications 
Volume 2007 (2007), Article ID 58189, 13 pages
doi:10.1155/2007/58189
Research Article

On Complex Oscillation Property of Solutions for Higher-Order Periodic Differential Equations

Zong-Xuan Chen and Shi-An Gao

 Department of Mathematics, South China Normal University, Guangzhou 510631, China
Received 13 March 2007; Accepted 21 June 2007

Recommended by Patricia J. Y. Wong

Abstract

We investigate properties of the zeros of solutions for higher-order periodic differential equations, and prove that under certain hypotheses, the convergence exponent of zeros of the product of two linearly independent solutions is infinite.