Fuzzy测度的绝对连续性及扩张

要建立定义在环上的Fuzzy测度(或更广泛一些的非可加测度)的一般扩张理论是困难的。迄今为止,有关的讨论都局限于某些特殊类型的Fuzzy测度(非可加测度)。在本文中,我们也仅研究一类特殊的Fuzzy测度的扩张,给出它们能从一个代数扩张到包含这个代数的σ-代数上去的条件。     

残余应力引起的误差及保证加工精度的措施

零件中的残余应力会破坏加工精度。本文阐述了残余应力产生的原因与分类,减少或消除残余应力的措施。     

二极管反向恢复时间的一种测定方法

通过对二极管反向恢复过程特性的研究 ,给出了反向恢复时间的测定方法 ,运用高性能等精度计数器实现了快速准确的测量 ,提高了测量精度。     

具有Bloch导函数的Carleson不等式

本文利用Bloch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Bloch导函数的Carleson不等式。     

带外扰的不连续系统关于部分变元的实用稳定性

研究不连续系统在外扰作用下,部分变元的实用稳定性问题,给出了主要的判别准则,这些准则对于全部变元亦适用,因而有关全部变元的结果为本文的特别。     

函数Lebesgue可积的一个Riemann和判别准则

使用 Riemann 和给出了实变函数 Lebesgue 可积的判别准则。     

Strong type estimate and Carleson measures for Lipschitz spaces

We establish a capacitary strong type estimate for Lipschitz space and characterize the related Carleson measures.

     

Cauchy Problem of Some Doubly Degenerate Parabolic Equations with Initial Datum a Measure

This paper discusses the Cauchy problem of the equation

On periodic solutions of nonlinear integral equations modelling infectious disease on measure chain

The modelling of the spread of infectious disease is carried out for time t on a measure chain T. Our approach unifies the continuous case and the discrete case . The model is described by the integral equation

where x(t) represents the proportion of the population infected at time t, f(t,x(t)) denotes the proportion of the population newly infected per unit time, and τ is the length of time an individual remains infectious. Using the measure chain calculus, we shall develop criteria for the existence of a nontrivial and nonnegative periodic solution for the modelling equation. The criteria can be implemented numerically, for this we shall give an algorithm as well as illustrative examples.     

Universally meager sets

We study category counterparts of the notion of a universal measure zero set of reals.

We say that a set is universally meager if every Borel isomorphic image of is meager in . We give various equivalent definitions emphasizing analogies with the universally null sets of reals.

In particular, two problems emerging from an earlier work of Grzegorek are solved.