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On oscillatory and asymptotic behavior of fourth order non-linear neutral delay dynamic equations. (English) Zbl 1241.34096

Summary: Oscillatory and asymptotic properties of solutions of a class of nonlinear fourth order neutral dynamic equations of the form \[ (r(t)(y(t)+p(t)y(\alpha(t)))^{\Delta^2})^{\Delta^2}+ q(t)G(y(\beta(t)))=0\tag{H} \] and \[ (r(t)(y(t)+p(t)y(\alpha(t)))^{\Delta^2})^{\Delta^2}+ q(t)G(y(\beta(t)))=f(t)\tag{NH} \] for \(t\in[t_0,\infty]_\mathbb{T}\), \(t_0\geq 0\), where \(\mathbb{T}\) is a time scale such that \(\sup\mathbb{T}=\infty\), \(t_0\in\mathbb{T}\) are studied under the assumption \(\int^\infty_{t_0}\frac{t}{r(t)}\Delta t=\infty\) for various ranges of \(p(t)\). Sufficient conditions are obtained for the existence of bounded positive solutions of (NH) by using Schauder’s fixed point theorem.

MSC:

34N05 Dynamic equations on time scales or measure chains
34K11 Oscillation theory of functional-differential equations
34K40 Neutral functional-differential equations
34K25 Asymptotic theory of functional-differential equations
47N20 Applications of operator theory to differential and integral equations
Full Text: DOI

References:

[1] Bohner, M.; Peterson, A., Dynamic Equations on Time scales: An Introduction with Applications (2001), Birkhäuser · Zbl 0978.39001
[2] Bohner, M.; Peterson, A., Advances in Dynamic Equations on Time scales (2003), Birkhäuser · Zbl 1025.34001
[3] Thandapani, E.; Arockiasamy, I. M., Oscillatory and asymptotic behaviour of fourth order non-linear neutral delay difference equations, Indian J. Pure Appl. Math., 32, 109-123 (2001) · Zbl 1004.39005
[4] Tripathy, A. K., Oscillation of fourth order nonlinear neutral difference equations I, Math. Slovaca, 58, 2, 221-240 (2008) · Zbl 1174.39004
[5] Parhi, N.; Tripathy, A. K., On oscillatory fourth order nonlinear neutral differential equations II, Math. Slovaca, 55, 2, 183-202 (2005) · Zbl 1114.34048
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