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Necessary and sufficient conditions for oscillations of delay differential inequalities

Published online by Cambridge University Press:  17 April 2009

Jurang Yan
Jurang Yan
Affiliation:
Department of Mathematics, Shanzi University, Taiyuan, Shanxi, People's Republic of China.
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Abstract

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A necessary and sufficient condition is obtained for a first order linear delay differential inequality to be oscillatory. Our main result improves and extends some known results.

Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 39 , Issue 2 , April 1989 , pp. 161 - 165
Copyright
Copyright © Australian Mathematical Society 1989

References

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