Abstract
Let X, Y be two n-dimensional normed spaces. The Banach-Mazur distance between them is defined as
Obviously d(X, Y) ≥ 1 and d(X, Y) = 1 if and only if X and Y are isometric. If d(X, Y) ≤ λ we say that X and Y are λ — isomorphic. The notion of the distance also has a geometrical interpretation. If d(X, Y) is small then in some sense the two unit balls B(X) = {x ∈ X; ‖x‖ ≤ 1} and B(Y) = {y ∈ Y; ‖y‖ ≤ 1} are close one to the other. More precisely there is a linear transformation ϕ such that
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© 1986 Springer-Verlag Berlin Heidelberg
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(1986). Finite Dimensional Normed Spaces, Preliminaries. In: Asymptotic Theory of Finite Dimensional Normed Spaces. Lecture Notes in Mathematics, vol 1200. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-38822-7_3
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DOI: https://doi.org/10.1007/978-3-540-38822-7_3
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-16769-3
Online ISBN: 978-3-540-38822-7
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