Ball proximinal and strongly ball proximinal hyperplanes

• Autores: Indumathi Vedarethinam, Nupur Prakash
• Localización: Journal of approximation theory, ISSN 0021-9045, Vol. 172, Nº 1, 2013, págs. 37-46
• Idioma: inglés
• DOI: 10.1016/j.jat.2013.04.006
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• Resumen

  • A closed subspace Y of a normed linear space X is said to be ball proximinal if the closed unit ball of Y is proximinal in X. In this paper, we characterize ball proximinal and strongly ball proximinal hyperplanes.