On the p-drop theorem, 1 ≤ p ≤∞.
Abdelhakim Maaden (2002)
Extracta Mathematicae
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Abdelhakim Maaden (2002)
Extracta Mathematicae
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Abdelhakim Maaden, Abdelkader Stouti (2006)
Archivum Mathematicum
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It is shown that under natural assumptions, there exists a linear functional does not have supremum on a closed bounded subset. That is the James Theorem for non-convex bodies. Also, a non-linear version of the Bishop-Phelps Theorem and a geometrical version of the formula of the subdifferential of the sum of two functions are obtained.
Dominique Azé, Jean-Paul Penot (1995)
Annales de la Faculté des sciences de Toulouse : Mathématiques
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S. Cobzaş (1999)
Acta Universitatis Carolinae. Mathematica et Physica
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