Metric Entropy of Convex Hulls in Banach Spaces
Bernd Carl, Ioanna Kyrezi, Alain Pajor · Journal of the London Mathematical Society · 1999
The paper presents diverse methods for estimating the covering number of a precompact subset of a Banach space when the entropy of the set of its extremal points is already known. In the case of a Hilbert space, the Gelfand diameters of the subset are also estimated.