On oscillations of nonlinear differential equations

zbMath0644.34025MaRDI QIDQ1102425

A. A. Ragab, Hassan M. El-Owaidy, Afaf A. S. Zaghrout

Publication date: 1987

Published in: Indian Journal of Pure \& Applied Mathematics (Search for Journal in Brave)

zbMATH Keywords

second order nonlinear differential equationsoscillation of solutioutions \(x_ i(t)\), \(i=1,2\), we have \(\inf _{t\in R_ 1}\| x_ 1(t)-x_ 2(t)\| \geq p,\) where \(R_ 1=dom(x_ 1)\cap dom(x_ 2))\), then all the bounded solutions are almost periodic

Mathematics Subject Classification ID

Nonlinear ordinary differential equations and systems (34A34) Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations (34C10)

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