Oscillation of even-order neutral delay differential equations.
Li, Tongxing, Han, Zhenlai, Zhao, Ping, Sun, Shurong (2010)
Advances in Difference Equations [electronic only]
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Li, Tongxing, Han, Zhenlai, Zhao, Ping, Sun, Shurong (2010)
Advances in Difference Equations [electronic only]
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Ireneusz Kubiaczyk, Samir H. Saker (2002)
Mathematica Slovaca
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Han, Zhenlai, Li, Tongxing, Zhang, Chenghui, Sun, Ying (2011)
Abstract and Applied Analysis
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Sun, Shurong, Li, Tongxing, Han, Zhenlai, Sun, Yibing (2011)
Abstract and Applied Analysis
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E.M. Elabbasy, S.H. Saker (2003)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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Some sufficient conditions for oscillation of a first order nonautonomuous delay differential equation with several positive and negative coefficients are obtained.
Ireneusz Kubiaczyk, Samir H. Saker (2002)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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Oscillation criteria, extended Kamenev and Philos-type oscillation theorems for the nonlinear second order neutral delay differential equation with and without the forced term are given. These results extend and improve the well known results of Grammatikopoulos et. al., Graef et. al., Tanaka for the nonlinear neutral case and the recent results of Dzurina and Mihalikova for the neutral linear case. Some examples are considered to illustrate our main results.
George E. Chatzarakis, Ponnuraj Dinakar, Srinivasan Selvarangam, Ethiraju Thandapani (2022)
Mathematica Bohemica
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We obtain some new sufficient conditions for the oscillation of the solutions of the second-order quasilinear difference equations with delay and advanced neutral terms. The results established in this paper are applicable to equations whose neutral coefficients are unbounded. Thus, the results obtained here are new and complement some known results reported in the literature. Examples are also given to illustrate the applicability and strength of the obtained conditions over the known...
Kikina, L.K., Stavroulakis, I.P. (2010)
International Journal of Differential Equations
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Elabbasy, E. M., Hassan, T. S. (2008)
Serdica Mathematical Journal
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2000 Mathematics Subject Classification: 34K15, 34C10. In this paper, we study the oscillatory behavior of first order nonlinear neutral delay differential equation (x(t) − q(t) x(t − σ(t))) ′ +f(t,x( t − τ(t))) = 0, where σ, τ ∈ C([t0,∞),(0,∞)), q О C([t0,∞), [0,∞)) and f ∈ C([t0,∞) ×R,R). The obtained results extended and improve several of the well known previously results in the literature. Our results are illustrated with an example.
Li, Tongxing, Han, Zhenlai, Zhang, Chenghui, Li, Hua (2011)
Abstract and Applied Analysis
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Tripathy, A.K. (2008)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Binggen Zhang (1988)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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This note contains a criterion for the oscillation of solution of a kind of integro-differential equations with delay.
Wan-Tong Li, S. H. Saker (2001)
Annales Polonici Mathematici
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We consider nonlinear neutral delay differential equations with variable coefficients. Finite and infinite integral conditions for oscillation are obtained. As an example, the neutral delay logistic differential equation is discussed.
Binggen Zhang (1988)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti
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This note contains a criterion for the oscillation of solution of a kind of integro-differential equations with delay.