广义Moran集的Packing维数

给出了Ｐａｃｋｉｎｇ维数的一个等定认并确定了广义Ｍｏｒａｎ集的Ｐａｃｋｉｎｇ维数。     

一类Moran测度的加细重分形分析

主要研究了在2种压缩方式和2种测度分配方式下的Moran集上的Moran测度的重分形分析。在假设2种方式的频率存在的前提下,得到了关于上、下局部维数所确定的水平集的Hausdorff维数和Packing维数,证明此类Moran测度满足重分形机制。     

关于测度的重分形分析

测度的重分形分析是分形几何的一个重要研究方向,它广泛应用于动力系统、湍流、降雨量模型、地震和金融时间序列模型.发展重分形测度的数学理论和方法至关重要.文中简要阐述测度的重分形分析的基本思想和方法,并介绍笔者及其课题组在该领域取得的主要研究成果.     

齐次Cantor集的重分形分解

考虑齐次Ｃａｎｔｏｒ集的重分形分解问题,讨论了齐次Ｃａｎｔｏｒ集的重分形分解集的Ｈａｕｓｄｏｒｆｆ维数问题．     

图有向自保形测度的重分形

讨论图有向自保形集的重分形,得到开集条件下自保形集关于图有向自保形测度的重分形分解公式,推广了无向图自保形重分形。同时,将图有向自保形集在强开集条件的结果减弱成为开集条件。     

直线上一类分形集的Hausdorff 测度

给出了一个明晰的计算公式,用以计算直线一类分形集的Hausdorff测定的精确值,并通过自相似压缩映射的某些特性,用以刻画分形的凸包。     

广义自相似集的维数

在减弱了压缩尺度具有正的下确界的条件下,利用配齐降阶方法和网测度的方法,讨论了广义自相似集的Ｈａｕｓｄｏｒｆｆ维数,并得到了广义自相似集的Ｈａｕｓｄｏｒｆｆ维数。     

一类广义Cantor集的Hausdorff测度

讨论了线性迭代系统si（x）=aix＋ci,i=1,2,3在满足开集条件时, 产生的广义Cantor集E与F,并获得了E与F的s维Hausdorff测度的精确值,即H^s（E）=1,Hs（F）=[c3/1-a3-c1/1-a1]^s,其中s满足a1^s＋a2^s＋a3^s=1.     

一类统计自相似集的重分形分解

将余旌胡和胡迪鹤所研究的统计自相似集K(ω)的限制条件放宽,利用Arbeiter与Patzschke的思想,构造了两个鞅,最终给出了在强开集条件下K(ω)的重分形分解集Kα(ω)关于支撑在K(ω)上的随机测度νq,ω的Hausdorff维数表达式.     

正实数阶广义J集外部结构探讨

推广了Philip提出的用于探讨Mandelbrot集外部结构问题的区域分解和角度分解方法，提出了等势线和色彩调配法，并利用这4种方法构造了一系列正实数阶广义Julia集(简称广义J集)的外部结构图，研究了广义J集外部结构的分形特征及演化过程。     

Moran sets and Moran classes

The purpose of this survey is to present Moran sets and Moran classes which generalize the classical selfsimilar sets from the following points: (i) The placements of the basic sets at each step of the constructions can be arbitrary; (ii) the contraction ratios may be different at each step; and (iii) the lower limit of the contraction ratios permits zero. In this discussion we will present geometrical properties and results of dimensions of these sets and classes, and discuss conformai Moran sets and random Moran sets as well.     

Net measure properties of Moran sets and applications

The Hausdorff and packing dimensions for a class of Moran sets are obtained.     

一类Moran测度的勒让德谱与q-Renyi维数

在一定条件下完全确定了一类Moran测度的勒让德谱及q-Renyi维数.     

Dimensions of a class of high-dimensional homogeneous Moran sets and Moran class

A class of high-dimensional homogeneous Moran sets and Moran classes are introduced and some dimensional properties are studied. The Hausdorff dimension, modified lower box-counting dimension, lower and upper box-counting dimension, and packing dimension of high-dimensional homogeneous and partial homogeneous Cantor sets are determined. Moreover, a kind of fractal E is obtained, which is not regular but with the property Dimw(Ed)=dDimw(E), where w denotes any of the dimensions mentioned above.     

Dimensions of a class of high-dimensional homogeneous Moran sets and Moran classes

A class of high-dimensional homogeneous Moran sets and Moran classes are introduced and some dimensional properties are studied. The Hausdorff dimension, modified lower box-counting dimension, lower and upper box-counting dimension, and packing dimension of high-dimensional homogeneous and partial homogeneous Cantor sets are determined. Moreover, a kind of fractal E is obtained, which is not regular but with the property Dimw(Ed)=dDimw(E), where w denotes any of the dimensions mentioned above.     

噪声信息的多重分形和分形噪声的物理机制

指出分形体可分为实空间分形和相空间分形。分形噪声的频谱在空间信息序列重构的相这间中徨长为多重分形。     

一类耦合的非线性KdV方程组的Hausdorff维数和分形维数

研究了一类耦合的非线性KdV方程组解的渐进性质，根据非线性Galerkin方法和Leray-Schauder定理，应用线性变分的方法，得到了Hausdorff维数dH(A)≤J0和分形维数dF(A)≤[1 2b√b/3c/aJ0^3-bJ0]的上界估计。     

关于一类Weierstrass函数的分形维数

研究了形如sum from k=1 to ∞ λ~(-k)sin(λ~kt),λ>1的Weierstrass函数图像的分形维数,证明了这类函数的Box维数与Hausdorff维数等于1。     

多分形测度的正则系综描述

借助多分形公式与热力学、统计物理学间的类比关系，建立了多分形测度的正则系综描述．根据系综理论，证明了多分形测度的ｑ阶矩等于相应正则系综的配分函数．这为发展多分形理论，提供了另一思路     

Moran sets in complete metric space

The Hausdorff dimensions and packing dimensions of Moran sets in the (C ,s)- homogeneous space are presented, which generalizes the results of Hua and Rao.