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Artículo
A lower bound for the equilateral number of normed spaces
(American Mathematical Society, 2008)
We show that if the Banach-Mazur distance between an n-dimensional normed space X and ℓ n∞ is at most 3/2, then there exist n + 1 equidistant points in X. By a well-known result of Alon and Milman, this implies that an ...