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本语言给出了递归集的Hausdorff维数的下界估计,并由此确定了一类递归集的维数,所获结果包含并推广了Bedford,Dekking及文志英,钟红柳等人的有关结果。 相似文献
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设K为广义自相似集,μ为支撑于K上的无穷乘积测度,本文中证明了K的重fractal分解集Kα恰好由关于测度μ的点态维数为α的点所组成,并证明了Kα的packing维数与其Hausdorff维数一致,从而Kα为在Taylor[9]意义下的fractal集。 相似文献
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本文研究了随机压缩向量满足一定条件下的随机Moran集的分形维数.利用计算上盒维数的上界和分形维数之间的性质,得到Moran集各种分形维数. 并在一般情形下,给出随机Moran集的上盒维数的上界. 相似文献
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关于自相似集的一个维数定理 总被引:1,自引:1,他引:0
本文对严格自相似集,提出了一个比“开集”条件更弱的“可解”条件,并且证明:在可解条件下,自相似集的Hausdorff维数及Bouligand维数与其相似维数一致. 相似文献
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设W~(t)∶R N→Rd是N指标d维广义W inner过程,Bore l集E1,…,Em RN>.本文研究了在一定条件下,m项代数和W~(E1)W~(E2)…W~(Em)的H ausdorff维数和Pack ing维数的有关结论,其结果推广了文[3]的相关结果。 相似文献
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本文研究了d维平稳高斯过程极集的性质,给出了d维平稳高斯过程广义极性的充分条件,并通过一个特殊的Cantor型集的构造将极集的维数与容度巧妙地结合起来,得到了d维平稳高斯过程非极集的Hausdorff维数的下确界. 相似文献
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R~n上分形集的多重维数 总被引:5,自引:0,他引:5
江惠坤 《数学年刊A辑(中文版)》1995,(1)
本文推广Hausdorff测度和维数的概念,引入了被称作为多重维测度和多重维数的概念.文中证明了关于多重维测度的Frostman定理,构造了一个例子说明存在一类点集,其Hausdorff测度是零或十∞,但其多重维测度是一个正数,并说明了多重维数除第一个分量是正数外,其它分量可以取到任何实数. 相似文献
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设F是满足强分离条件的自相似集,A↓x∈F,必存在唯一的无穷序列σx=(σx^(1),…,σx^(k)…)∈{1,2,…,m}^N,与之对应,定义F的子集:Fm,c,r={x∈F|∑rj=1σx^n j≥c,n=0,1,2,…},其中c,r为任意取定的正整数,本文证明了fm,c,r是图递归集,并确定了Fm,c,r的Hausdorff维数。 相似文献
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Li-Min Shi 《Journal of Mathematical Analysis and Applications》2006,318(1):190-198
In this paper we obtain a lower bound for the Hausdorff dimension of recurrent sets and, in a general setting, we show that a conjecture of Dekking [F.M. Dekking, Recurrent sets: A fractal formalism, Report 82-32, Technische Hogeschool, Delft, 1982] holds. 相似文献
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In [10], the notion of homogeneous perfect sets as a generalization of Cantor type sets is introduced and their Hausdorff
and lower box-counting dimensions are studied. In this paper, we determine their exact packing and upper box-counting dimensions
based on the length of their fundamental intervals and the gaps between them. Some known results concerning the dimensions
of Cantor type sets are generalized.
This work was supported by NSFC (10571138). 相似文献
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Pieter C. Allaart Kiko Kawamura 《Journal of Mathematical Analysis and Applications》2007,335(2):1161-1176
The graphs of coordinate functions of space-filling curves such as those described by Peano, Hilbert, Pólya and others, are typical examples of self-affine sets, and their Hausdorff dimensions have been the subject of several articles in the mathematical literature. In the first half of this paper, we describe how the study of dimensions of self-affine sets was motivated, at least in part, by these coordinate functions and their natural generalizations, and review the relevant literature. In the second part, we present new results on the coordinate functions of Pólya's one-parameter family of space-filling curves. We give a lower bound for the Hausdorff dimension of their graphs which is fairly close to the box-counting dimension. Our techniques are largely probabilistic. The fact that the exact dimension remains elusive seems to indicate the need for further work in the area of self-affine sets. 相似文献
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In-Soo Baek 《Journal of Mathematical Analysis and Applications》2004,292(1):294-302
A self-similar Cantor set is completely decomposed as a class of the lower (upper) distribution sets. We give a relationship between the distribution sets in the distribution class and the subsets in a spectral class generated by the lower (upper) local dimensions of a self-similar measure. In particular, we show that each subset of a spectral class is exactly a distribution set having full measure of a self-similar measure related to the distribution set using the strong law of large numbers. This gives essential information of its Hausdorff and packing dimensions. In fact, the spectral class by the lower (upper) local dimensions of every self-similar measure, except for a singular one, is characterized by the lower or upper distribution class. Finally, we compare our results with those of other authors. 相似文献
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本文构造了一类具有类似高维Moran结构的集合,给出一些充分条件来计算其Hausdorff维数. 相似文献
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1 IntroductionTherehasbeenconsiderableinterestinfractals,bothintheiroccurrenceinthesciences,andintheirmathematicaltheory .Awideclassoffractalsetsaregeneratedbyiteratedfunc tionsystem .Aself similarsetinRdisacompactsetKfulfillingtheinvarianceK =∪Ni=1 SiK ,whereS1,S2 ,… ,SNarecontractivesimilarities.IfS1,S2 ,… ,SNarecontractiveconfor malmappings,weobtainself conformalset.Itiswell known(seeHutchinson [1 2 ] )that,givenafamilyofsuchmappings,thereisauniquecompactsetwiththisproperty .Ifth… 相似文献
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陈振龙 《数学物理学报(B辑英文版)》2011,31(3):969-992
This paper studies fractal properties of polar sets for random string processes. We give upper and lower bounds of the hitting probabilities on compact sets and prove some sufficient conditions and necessary conditions for compact sets to be polar for the random string process. Moreover, we also determine the smallest Hausdorff dimensions of non-polar sets by constructing a Cantor-type set to connect its Hausdorff dimension and capacity. 相似文献
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《Indagationes Mathematicae》2019,30(5):862-873
An approach is given for estimating the Hausdorff dimension of the univoque set of a self-similar set. This sometimes allows us to get the exact Hausdorff dimensions of the univoque sets. 相似文献