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The Hausdorff dimension of systems of simultaneously small linear forms

Published online by Cambridge University Press:  26 February 2010

H. Dickinson
Affiliation:
Department of Mathematics, The University of YorkHeslington, York, YO1 5DD
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Extract

In this paper the Hausdorff dimension of systems of real linear forms which are simultaneously small for infinitely many integer vectors is determined. A system of real linear forms,

where ai, xij∈ℝ, 1 ≤im, 1≤jn will be denoted more concisely as

where a∈⇝m, X∈ℝmn and ℝmn is identified with Mm × n(ℝ), the set of real m × n matrices. The supremum norm of any vector in k dimensional Euclidean space, ℝk will be denoted by |v|. The distance of a point a from a set B, will be denoted by dist (a, B) = inf {|ab|: bB}.

Type
Research Article
Copyright
Copyright © University College London 1993

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