Some fractal properties of a class of self-similar Markov processes

LetX=(Ω,F,F _t ,X _t , θ _t ,P ^x be a self-similar Markov process on (0, ∞). The exact Hausdorff measure function of the level sets are obtained. An appropriate condition is given under which the self-similar Markov process corresponds to a stable process, and some more fractal properties of the sample path ofX are obtained in this case. Supported by the National Natural Science Foundation of China Huang Lihu: born in March 1972, Ph. D graduate student     

自相似集的一类维函数

设E是由满足开集条件的IFS{fi}in=1生成的自相似集,其中fi为相似映射,相似比为ci,0ci1.已经知道,E的Hausdorff维数,填充维数,盒维数及相似维数相等,而且E具有正有限s维Hausdorff测度及预填充测度.将要证明若g为维函数且满足条件:(1)∑ni=1g(ci)=1;(2)对于由数字{1,2,…,n}生成的任意一个k项序列σ=i1…ik,有g(ci1…cik)=g(ci1)…g(cik),则E具有正有限g-Hausdorff测度及g-预填充测度.     

The construction of statistically self-similar measures

We have studied statistically self-similar measures together with statistically self-similar sets in this paper. A special kind of statistically self-similar measures has been constructed and a class of statistically self-similar sets as well. Supported by the National Natural Science Fundation and the Doctral Programme Fundation of China Hu Dihe: born in May 1935, Professor     

The convergence of statistically self-similar sets and the upper bound and lower bound of Hausdorff measure

We constructed a class of self-similar sets and proved the convergence in this paper. Besides these, the upper bound and lower bound of Hausdorff measures of them were given too. Supported by the National Natural Science Fundation and the Doctral Programme Fundation of China Hu Dihe: born in May 1935, Professor     

Some Results about the Sample Path Properties of Markov Processes with Independent Self-Similar Components

This paper considers a special class of operator self-similar processes Markov processes {X（t）, t≥0} with independent self-similar components, that is, X （ t ） =（X^1（t）,…,X^d（t））, where {X^i（t）,t≥0}, i=1,2,…,d are d independent real valued self-similar Markov processes. By means of Brel-Cantelli lemma, we give two results about asymptotic property as t→∞ of sample paths for two special classes of Markov processes with independent self-similar components.     

自相似测度对一些参数的连续依赖性

证明自相似测度对迭代函数系统的压缩因子、平移向量以及概率向量在Hutchinson度量意义下是连续依赖的.     

一类算子稳定过程图集的Hausdorff测度

设X={X（t）,t∈R＋}是取值R^d上的,指数为对角矩阵的算子稳定过程．文章将探讨X的图集的Hausdorff测度问题．更确切地,利用逗留时得到了图集G（[0,1]）={（t,X（t））：0≤t≤1}的确切Hausdorff测度函数．这一结果推广了已有文献中类似的结果．     

关于一类自相似集的上密度

研究了自相似集上的Hausdorff测度H的上s密度,尤其对于E是一个自相似集,且满足条件c^1＋1-3c＋1=0,l∈N,c是相似集E上的比例常数,获得了一类自相似集E上的Hausdorff测度的精确上s密度．     

The structure and the sufficint and necessary conditions for generalized statistically self-similar sets

We constructed a class of generalized statistically self-similar sets and give the necessary and sufficent conditions to ensure a random recursive set being a generalized statistically self-similar set. The statistically self-similar sets defined by Hutchinson, Falconer, Graf are the special cases of ours. Foundation item: Supported by the National Natural Science Foundation of China Biography: DENG Ai-jiao (1974-), female, Ph.D. candidate, research interes: is in stochastic process and random ractal     

Kock曲线的Hausdorff测度

对 Kock曲线的 Hausdorff测度进行了估计 ,并给出了一个公式 .由此公式 ,得到了 Kock曲线的Hausdorff测度的上界估计 ,并推翻了关于它的一个猜测 .     

一个特殊分形集的Hausdorff测度估计

利用满足开集条件的自相似分形的性质，得到一个特殊分形Hausdorff测度的上界估计公式。由此公式，对它的Hausdorff测度的上界进行了估计，并用两种方法估计了它的Hausdorff测度的下界。     

三分Cantor集自乘积的Hausdorff测度上限的估计

文章证明了三分Cantor集C的自乘积C×C的Hausdorff测度的上限满足,Hlog34(C×C)1.495901改进了现有文献的有关结果.     

一类广义恰当罚函数存在的一个充要条件

就一个广义的数学规划问题(PH),研究了其恰当罚函数存在的条件.在已有结果的基础上给出了一类涵义较为广泛的罚函数,撇开象空间的正则性条件,得到了问题(PH)恰当罚函数存在的一个充要条件,并且把得到的结果推广到广义分式规划中去.     

一类非线性反应一扩散方程丰富的显式精确解

借助于作者最近开发的求解非线性偏微分方程精确解的符号计算软件包——PDEsolver,获得了一类非线性反应一扩散方程丰富的显式精确解．WAZWAZ获得的所有解为本文一些解的特例．另外还获得了许多其他新的显式精确解．结果表明,扩展双曲函数方法是WAZWAZ所提扩展双曲正切方法的改进和推广．扩展双曲函数方法提供了精确求解非线性偏微分方程的有效方法．     

一类非线性方程新的精确孤波解

将双曲函数法进一步推广,引入新的函数变换f和g,利用计算机代数系统M athem atica求出了Burgers方程和F isher方程的一系列的精确孤波解,其中有很多新的精确孤波解.同时这种方法也适用于其他的非线性方程.     

一类非线性反应-扩散方程丰富的显式精确解

借助于作者最近开发的求解非线性偏微分方程精确解的符号计算软件包——PDE Solver,获得了一类非线性反应-扩散方程丰富的显式精确解.WAZWAZ获得的所有解为本文一些解的特例.另外还获得了许多其他新的显式精确解.结果表明,扩展双曲函数方法是WAZWAZ所提扩展双曲正切方法的改进和推广.扩展双曲函数方法提供了精确求解非线性偏微分方程的有效方法。     

Polarity for a class of Levy processes

Polar set of Markov processes is an important concept in probabilistic potential theory, but it is not easy to judge the polarity of the sets. In this paper, we give some results which can be easily used to examine the polarity of the sets whenX _t belongs to a special class of Levy processes. We also give a result about polar functions of symmetric stable processes. Biography: Wu Chuan-ju(1974-), Ph. D candidate, research direction: theory and application of stochastic processes.     

广义Besicovitch集的Hausdorff测度

给定一概率向量p=(p0,p1,…,pm-1)(m≥2),Besicovitch集Bp是由单位区间[0,1]中那些在m-进制展式中j(j=0,1,…,m-1)出现的频率为pj的点组成,即Bp={x∈[0,1]:limn→∞1n∑nk=1τj(xk)=pj,j=0,1,…,m-1},其中τj(·)表示单点集{j}的特征函数.对给定的概率向量p=(p0,p1,…,pm-1)以及满足一定条件的实值向量a=(a0,a1,…,am-1),考虑广义Besicovitch集Bτ,a={x∈[0,1]:}limn→∞1nτ(∑nk=1τj(xk)-npj)=aj,j=0,1,…,m-1},其中τ∈(12,1),并证明了Bτ,a在任何量纲函数下的Hausdorff测度非零即无穷大,进一步,证明了当∑m-1j=0ajlogpj≤0时,广义Besicovitch集的Hausdorff测度为无穷大.     

Carleson测度与BMO函数的导数

利用有界平均振动解析函数的导函数的积分不等式刻画了Carleson测度的特征,建立了具有BMOA导函数的Carleson不等式.