Comparison of two definitions of lower and upper functions associated to nonlinear second order differential equations.
Vrkoč, Ivo (2001)
Journal of Inequalities and Applications [electronic only]
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Vrkoč, Ivo (2001)
Journal of Inequalities and Applications [electronic only]
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Rachůnková, Irena
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Martin Šenkyřík (1994)
Mathematica Bohemica
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In the paper we prove an Ambrosetti-Prodi type result for solutions of the third-order nonlinear differential equation, satisfying .
Ján Rusnák (1990)
Mathematica Slovaca
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