Oscillation of second-order nonlinear differential equations with damping term.
Elabbasy, E.M., Elhaddad, W.W. (2007)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Elabbasy, E.M., Elhaddad, W.W. (2007)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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N. Parhi, P. Praharaj (1999)
Annales Polonici Mathematici
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Some results concerning oscillation of second order self-adjoint matrix differential equations are obtained. These may be regarded as a generalization of results for the corresponding scalar equations.
Roman Koplatadze, N. L. Partsvania, Ioannis P. Stavroulakis (2003)
Archivum Mathematicum
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Sufficient conditions are established for the oscillation of proper solutions of the system where are locally summable functions, while and are continuous and continuously differentiable functions, respectively, and , .
Došlý, Ondřej (1999)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Manojlović, Jelena V. (2000)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Saker, S.H., Manojlović, J.V. (2004)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Alexander Lomtatidze (1996)
Archivum Mathematicum
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Oscillation and nonoscillation criteria are established for the equation where , and is a locally summable function.
Satoshi Tanaka (2000)
Annales Polonici Mathematici
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Neutral differential equations are studied. Sufficient conditions are obtained to have oscillatory solutions or nonoscillatory solutions. For the existence of solutions, the Schauder-Tikhonov fixed point theorem is used.