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A necessary and sufficient condition for a lower bound for fourth-order pseudodifferential operators

✍ Scribed by Cesare Parenti; Alberto Parmeggiani

Book ID
112893523
Publisher
Springer-Verlag
Year
1996
Tongue
English
Weight
384 KB
Volume
69
Category
Article
ISSN
0021-7670

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πŸ“œ SIMILAR VOLUMES

Necessary and Sufficient Conditions for
Necessary and Sufficient Conditions for a Fourth Order Functional Differential Equation to be Oscillatory
✍ K. Gopalsamy; Lizhi Wen; Yong-Shao Chen; Xue-Zhong He πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 416 KB

## Abstract Necessary and sufficient conditions for a fourth order functional differential equation of the form (1) [r(t)yβ€³(t)]β€³+f(t,y(h~1~(t)), y(h~2~(t)), …, y(h~n~(t)))=0 to be oscillatory are given when f is strongly superlinear or strongly sublinear.