A remark on the existence of small solutions to a fourth order boundary value problem with large nonlinearity
Ľudovít Pinda (1993)
Mathematica Slovaca
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Ľudovít Pinda (1993)
Mathematica Slovaca
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Jarmila Novotná (1983)
Časopis pro pěstování matematiky
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L. Mordell (1958)
Acta Arithmetica
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Jarmila Novotná (1980)
Časopis pro pěstování matematiky
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Pavel Pech (1992)
Mathematica Bohemica
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A sharpening of a discrete case of Wirtinger's inequality is given. It is then used to sharpen the isoperimetric unequality for polygons.