A Zero-One Law for Uniform Diophantine Approximation in Euclidean Norm
A Zero-One Law for Uniform Diophantine Approximation in Euclidean Norm
复制标题
欧几里得范数中统一丢番图近似的零一定律
DOI:
10.1093/imrn/rnaa256
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发表时间:
2020
影响因子:
1
通讯作者:
Rao, Anurag
中科院分区:
文献类型:
--
作者:
Kleinbock, Dmitry;Rao, Anurag
We study a norm-sensitive Diophantine approximation problem arising from the work of Davenport and Schmidt on the improvement of Dirichlet’s theorem. Its supremum norm case was recently considered by the 1st-named author and Wadleigh , and here we extend the set-up by replacing the supremum norm with an arbitrary norm. This gives rise to a class of shrinking target problems for one-parameter diagonal flows on the space of lattices, with the targets being neighborhoods of the critical locus of the suitably scaled norm ball. We use methods from geometry of numbers to generalize a result due to Andersen and Duke on measure zero and uncountability of the set of numbers (in some cases, matrices) for which Minkowski approximation theorem can be improved. The choice of the Euclidean norm oncorresponds to studying geodesics on a hyperbolic surface, which visit a decreasing family of balls. An application of the dynamical Borel–Cantelli lemma of Maucourant produces, given an approximation function, a zero-one law for the set ofsuch that for all large enoughthe inequalityhas non-trivial integer solutions.
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DOI:
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发表时间:
1965
期刊:
影响因子:
--
作者:
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通讯作者:
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发表时间:
1939
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作者:
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作者:
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通讯作者:
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DOI:
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发表时间:
1946
期刊:
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
影响因子:
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作者:
K. Mahler;L. Mordell
通讯作者:
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DOI:
10.1090/conm/631/12597
发表时间:
2013
期刊:
arXiv: Number Theory
影响因子:
--
作者:
D. Kleinbock;B. Weiss
通讯作者:
B. Weiss