Open Access

Oscillation of Higher-Order Neutral-Type Periodic Differential Equations with Distributed Arguments

Journal of Inequalities and Applications20072007:098423

DOI: 10.1155/2007/98423

Received: 19 October 2006

Accepted: 15 May 2007

Published: 2 September 2007


We derive oscillation criteria for general-type neutral differential equations , , where , , , , , and are real numbers, the functions and are nondecreasing in for each fixed , and is periodic and continuous with respect to for each fixed . In certain special cases, the results obtained generalize and improve some existing ones in the literature.


Authors’ Affiliations

Department of Mathematics, Iowa State University
Department of Mathematics, Middle East Technical University


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© R. S. Dahiya and A. Zafer 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.