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Zbl 1087.34015
Wang, Qiru
Interval criteria for oscillation of certain second-order nonlinear differential equations. (English)
[J] Dyn. Contin. Discrete Impuls. Syst., Ser. A, Math. Anal. 12, No. 6, 769-781 (2005). ISSN 1201-3390; ISSN 1918-2538/e

Summary: By employing a generalized Riccati technique and an integral averaging technique, new interval oscillation criteria are established for second-order nonlinear differential equations of the form $(r(t)y'(t))'+ Q(t,y(t)$, $y'(t))=0$.
MSC 2000:
*34C10 Qualitative theory of oscillations of ODE: Zeros, etc.

Keywords: interval averaging technique; generalized Riccati technique

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