NORMS OF RANDOM MATRICES AND WIDTHS OF FINITE-DIMENSIONAL SETS

© 1984 American Mathematical Society
, , Citation E D Gluskin 1984 Math. USSR Sb. 48 173 DOI 10.1070/SM1984v048n01ABEH002667

0025-5734/48/1/173

Abstract

Precise orders are given for the Kolmogorov and linear widths of the unit ball of the space in the metric of for . The determination of the upper estimates is based on approximation by random objects. This method goes back to Kashin (Math. USSR Izv. 11 (1977), 317-333). The corresponding lower estimates were obtained in a previous article of the author (Vestnik Leningrad. Univ. Math. 14 (1982), 163-170). Bibliography: 12 titles.

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10.1070/SM1984v048n01ABEH002667