Nonautonomous differential equations of alternately retarded and advanced type.
Meng, Qiong, Yan, Jurang (2001)
International Journal of Mathematics and Mathematical Sciences
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Meng, Qiong, Yan, Jurang (2001)
International Journal of Mathematics and Mathematical Sciences
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Avramescu, Cezar, Vladimirescu, Cristian (2000)
Abstract and Applied Analysis
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Aizicovici, Sergiu, McKibben, Mark (1999)
Abstract and Applied Analysis
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Park, J.Y., Lee, S.Y., Lee, M.J. (1999)
International Journal of Mathematics and Mathematical Sciences
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Šmarda, Zdeněk (2010)
Advances in Difference Equations [electronic only]
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Said R. Grace, Mustafa R. S. Kulenović, Hamdy El-Metwally (2002)
Czechoslovak Mathematical Journal
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We obtain some sufficient conditions for the existence of the solutions and the asymptotic behavior of both linear and nonlinear system of differential equations with continuous coefficients and piecewise constant argument.
Huseyin Bereketoglu, Aydin Huseynov (2006)
Czechoslovak Mathematical Journal
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In this paper we study nonlinear second order differential equations subject to separated linear boundary conditions and to linear impulse conditions. Sign properties of an associated Green’s function are investigated and existence results for positive solutions of the nonlinear boundary value problem with impulse are established. Upper and lower bounds for positive solutions are also given.