A simpler proof for the dimension of the graph of the classical Weierstrass function

IF 1.2 2区 数学 Q2 STATISTICS & PROBABILITY Annales De L Institut Henri Poincare-probabilites Et Statistiques Pub Date : 2017-02-01 DOI:10.1214/15-AIHP711
G. Keller
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引用次数: 19

Abstract

. Let W λ,b (x) = (cid:2) ∞ n = 0 λ n g(b n x) where b ≥ 2 is an integer and g(u) = cos ( 2 πu) (classical Weierstrass function). Building on work by Ledrappier (In Symbolic Dynamics and Its Applications (1992) 285–293), Bara´nski, Bárány and Romanowska ( Adv. Math. 265 (2014) 32–59) and Tsujii ( Nonlinearity 14 (2001) 1011–1027), we provide an elementary proof that the Hausdorff dimension of W λ,b equals 2 + log λ log b for all λ ∈ (λ b , 1 ) with a suitable λ b < 1. This reproduces results by Bara´nski, Bárány and Romanowska ( Adv. Math. 265 (2014) 32–59) without using the dimension theory for hyperbolic measures of Ledrappier and Young ( Ann. of Math. (2) 122 (1985) 540–574; Comm. Math. Phys. 117 (1988) 529–548), which is replaced by a simple telescoping argument together with a recursive multi-scale estimate. Résumé. (In Symbolic Dynamics and Its Applications (1992) 285–293), de Bara´nski, Bárány et Romanowska ( Adv. Math. 265 (2014) 32–59) et de Tsujii ( Nonlinearity 14 (2001) 1011–1027), nous présentons une démonstra-tion élémentaire du fait que la dimension de Hausdorff de W λ,b est égale à 2 + log λ log b pour tout λ ∈ (λ b , 1 ) avec λ b < 1 approprié. Cela reproduit des résultats de Bara´nski, Bárány et Romanowska ( Adv. Math. 265 (2014) 32–59) sans utiliser la théorie de dimension des mesures hyperboliques de Ledrappier et Young ( Ann. of Math. (2) 122 (1985) 540–574 ; Comm. Math. Phys. 117 (1988) 529–548), laquelle est remplacée par un argument téléscopique élémentaire conjointement avec une estimation récursive multi-échelle.
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经典Weierstrass函数图维数的一个简单证明
. 设W λ,b (x) = (cid:2)∞n = 0 λ n g(b n x),其中b≥2为整数,g(u) = cos (2 πu)(经典Weierstrass函数)。在Ledrappier (In Symbolic Dynamics and Its Applications(1992) 285-293)、Bara´nski, Bárány和Romanowska (Adv. Math. 265(2014) 32-59)和Tsujii (Nonlinearity 14(2001) 1011-1027)的工作基础上,我们提供了一个初等证明,证明对于所有λ∈(λ b, 1)且λ b < 1的情况下,W λ,b的Hausdorff维数等于2 + log λ log b。这再现了Bara´nski, Bárány和Romanowska (Adv. Math. 265(2014) 32-59)的结果,而没有使用Ledrappier和Young (Ann.)的双曲测量的维数理论。的数学。(2) 122 (1985) 540-574;通讯。数学。物理学报,117(1988)529-548),它被一个简单的伸缩论证和一个递归的多尺度估计所取代。的简历。(In Symbolic Dynamics and Its Applications (1992) 285-293), de Bara ' nski, Bárány et Romanowska (Adv. Math. 265 (2014) 32-59) et de Tsujii (Nonlinearity 14 (2001) 1011-1027), nous pracentsons one dsammonstrage du fait que la dimension de Hausdorff de W λ,b est + log λ log b pour tout λ∈(λ b, 1) avec λ b < 1)Cela redududes recametssulats de Bara ' nski, Bárány et Romanowska (Adv. Math. 265 (2014) 32-59), sans utiliser la thcametyde dimensionesdes measures hyperbolques de Ledrappier et Young (Ann。的数学。(2) 122 (1985) 540-574;通讯。数学。物理学报,117 (1988)529-548),laquelle est取代了same paran论点,即sami - sami - sami - sami - sami - sami - sami - sami - sami - sami。
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来源期刊
CiteScore
2.70
自引率
0.00%
发文量
85
审稿时长
6-12 weeks
期刊介绍: The Probability and Statistics section of the Annales de l’Institut Henri Poincaré is an international journal which publishes high quality research papers. The journal deals with all aspects of modern probability theory and mathematical statistics, as well as with their applications.
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