On a minimax problem of Ricceri.
Cordaro, Giuseppe (2001)
Journal of Inequalities and Applications [electronic only]
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Cordaro, Giuseppe (2001)
Journal of Inequalities and Applications [electronic only]
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Szymon Dolecki (1999)
Mathematica Slovaca
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Gérald Tenenbaum (2001)
Acta Arithmetica
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Corvellec, J. (1996)
Serdica Mathematical Journal
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The first motivation for this note is to obtain a general version of the following result: let E be a Banach space and f : E → R be a differentiable function, bounded below and satisfying the Palais-Smale condition; then, f is coercive, i.e., f(x) goes to infinity as ||x|| goes to infinity. In recent years, many variants and extensions of this result appeared, see [3], [5], [6], [9], [14], [18], [19] and the references therein. A general result of this type was given in [3, Theorem 5.1]...
Stefanescu, Anton (2004)
Journal of Applied Mathematics
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Howlett, P.G., Zaslavski, A.J. (2005)
Abstract and Applied Analysis
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Zaslavski, Alexander J. (2003)
Abstract and Applied Analysis
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Marek Galewski, Piotr Kowalski (2014)
Open Mathematics
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In this note we derive a type of a three critical point theorem which we further apply to investigate the multiplicity of solutions to discrete anisotropic problems with two parameters.
Hiroshi Yamazaki, Noboru Endou, Yasunari Shidama, Hiroyuki Okazaki (2007)
Formalized Mathematics
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In this article, we extended properties of sequences of real numbers to sequences of extended real numbers. We also introduced basic properties of the inferior limit, superior limit and convergence of sequences of extended real numbers.
Fioravante Patrone (1990)
Rendiconti del Seminario Matematico della Università di Padova
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