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Euclidean Sections of Direct Sums of Normed Spaces

Published online by Cambridge University Press:  20 November 2018

A. E. Litvak
Affiliation:
Department of Mathematics, Technion, Haifa, Israel, e-mail: [email protected] Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, Alberta T6G 2G1, e-mail: [email protected]
V. D. Milman
Affiliation:
Department of Mathematics, Tel Aviv University, Tel Aviv, Israel, e-mail: [email protected]
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Abstract

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We study the dimension of “random” Euclidean sections of direct sums of normed spaces. We compare the obtained results with results from $[\text{LMS}]$, to show that for the direct sums the standard randomness with respect to the Haar measure on Grassmanian coincides with a much “weaker” randomness of “diagonal” subspaces (Corollary 1.4 and explanation after). We also add some relative information on “phase transition”.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2003

References

[BLM] Bourgain, J., Lindenstrauss, J. and Milman, V. D., Approximation of zonoids by zonotopes. Acta Math. (1–2) 162 (1989), 73141.Google Scholar
[CP] Carl, B. and Pajor, A., Gelfand numbers of operators with values in a Hilbert space. Invent.Math. (3) 94 (1988), 479504.Google Scholar
[G1] Gluskin, E. D., Extremal properties of orthogonal parallelepipeds and their applications to the geometry of Banach spaces. Mat. Sb. (N.S.) (1) 136 (1988), 8596; translation in Math. USSR-Sb. (1) 64 (1989), 8596.Google Scholar
[G2] Gluskin, E. D., Deviation of a Gaussian vector from a subspace of , and random subspaces of . Algebra i Analiz (5) 1 (1989), 103–114; translation in Leningrad Math. J. (5) 1 (1990), 11651175.Google Scholar
[GGMP] Gordon, Y., Guédon, O., Meyer, M. and Pajor, A., On the Euclidean sections of some Banach spaces and operator spaces. Math. Scand., to appear.Google Scholar
[LMS] Litvak, A. E., Milman, V. D. and Schechtman, G., Averages of norms and quasi-norms. Math. Ann. 312 (1988), 95124.Google Scholar
[MS1] Milman, V. D. and Schechtman, G., Asymptotic theory of finite-dimensional normed spaces. Lecture Notes in Math. 1200, Springer, Berlin, New York, 1985.Google Scholar
[MS2] Milman, V. D. and Schechtman, G., Global versus local asymptotic theories of finite dimensional normed spaces. Duke Math. J. (1) 90 (1997), 7393.Google Scholar