Jan Popiołek (1997)
Annales Polonici Mathematici
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We prove the existence of solutions of some boundary-value problems for partial differential equations of order higher than two. The general idea is similar to that in [1]. We make an essential use of the results of our paper [12].
Michał Kisielewicz (1997)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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Some sufficient conditions for the existence of solutions to boundary value problem for differential inclusions are given.
K. Orlov (1976)
Matematički Vesnik
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K. Orlov (1978)
Matematički Vesnik
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M. A. Wolanowski (1977)
Annales Polonici Mathematici
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Sergio Bravo, Ivan Gonzalez, Karen Kohl, Victor H. Moll (2017)
Open Mathematics
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The method of brackets is a collection of heuristic rules, some of which have being made rigorous, that provide a flexible, direct method for the evaluation of definite integrals. The present work uses this method to establish classical formulas due to Frullani which provide values of a specific family of integrals. Some generalizations are established.
M. Krakowski (1971)
Applicationes Mathematicae
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K. Orlov (1978)
Matematički Vesnik
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P. Ch. Tsamatos (2004)
Annales Polonici Mathematici
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We study a nonlocal boundary value problem for the equation x''(t) + f(t,x(t),x'(t)) = 0, t ∈ [0,1]. By applying fixed point theorems on appropriate cones, we prove that this boundary value problem admits positive solutions with slope in a given annulus. It is remarkable that we do not assume f≥0. Here the sign of the function f may change.
M. Greguš (1974)
Annales Polonici Mathematici
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H.M. Srivastava, Martha C. Daoust (1969)
Publications de l'Institut Mathématique [Elektronische Ressource]
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Henderson, Johnny (2009)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Józef Wenety Myjak (1973)
Annales Polonici Mathematici
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