On the method of upper and lower solutions in abstract cones
V. Lakshmikantham, S. Leela (1983)
Annales Polonici Mathematici
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V. Lakshmikantham, S. Leela (1983)
Annales Polonici Mathematici
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J. Kaczorowski, A. Perelli (2012)
Acta Arithmetica
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L. Gajek (1987)
Applicationes Mathematicae
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Olivier Ramaré (2001)
Acta Arithmetica
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Markov, Minko, Haralampiev, Vladislav, Georgiev, Georgi (2015)
Serdica Journal of Computing
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We investigate a recently introduced width measure of planar shapes called sweepwidth and prove a lower bound theorem on the sweepwidth.
Kulikov, A.S., Fedin, S.S. (2004)
Zapiski Nauchnykh Seminarov POMI
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Al-Refai, Mohammed, Katatbeh, Qutaibeh (2006)
International Journal of Mathematics and Mathematical Sciences
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Brandi, Primo, Salvadori, Anna (1994)
Journal of Convex Analysis
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Alexander Abian, Judita Lihová (1982)
Mathematica Slovaca
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Molaei, M.R., Farhangdoost, M.R. (2006)
APPS. Applied Sciences
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Paturi, R., Pudlák, P. (2004)
Zapiski Nauchnykh Seminarov POMI
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Irena Rachůnková (1997)
Annales Polonici Mathematici
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We consider multipoint and two-point BVPs for second order ordinary differential equations with a Carathéodory right hand side. We prove the existence of solutions provided there exist upper and lower solutions of the BVP and the upper solution is less than the lower one.
Gavioli, Andrea (1998)
Journal of Convex Analysis
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