Comment on the paper: “Forced oscillation of certain neutral hyperbolic equations with continuous distributed deviating arguments” [Math. Comput. Modeling 49 (2009) 1211–1220]
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- 作者：Nina Shang ; Huizeng Qin
- 关键词：Differential equations ; Oscillatory solution ; Deviating arguments
- 刊名：Mathematical and Computer Modelling
- 出版年：2009
- 出版时间：October 2009
- 年：2009
- 卷：50
- 期：7-8
- 页码：1128-1129
- 全文大小：251 K
文摘
In recent years, many results on oscillation criteria of second-order nonlinear neutral delay differential equations with distributed deviating argument have been obtained, but some of these criteria are incorrect due to a mistake in a crucial auxiliary result. We give two counterexamples.