𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Addendum to “A necessary and sufficient condition for a lower bound for fourth-order pseudodifferential operators”

✍ Scribed by Cesare Parenti; Alberto Parmeggiani

Book ID
105608597
Publisher
Springer-Verlag
Year
1997
Tongue
English
Weight
24 KB
Volume
71
Category
Article
ISSN
0021-7670

No coin nor oath required. For personal study only.

📜 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 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 416 KB

## Abstract Necessary and sufficient conditions for a fourth order functional differential equation of the form (1) [r(t)y″(t)]″+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.