A weak invariance principle for self-normalized products of sums of mixing sequences

Let variables in the {X, Xn, n ≥ 1} be a sequence of strictly stationary φ-mixing positive random domain of attraction of the normal law. Under some suitable conditions the principle for self-normalized products of partial sums is obtained.     

符号型Nagumo条件下一类非线性边值问题的可解性

综合利用Leray-Schauder度理论的同伦不变性、上下解方法等,在符号型Nagumo条件下获得了一类三阶非线性常微分方程在非线性边界条件下解的存在性结果.     

正交表矩阵象的不变性及其应用

研究了正交表矩阵象的不变性，利用正交表矩阵象的不变性有时容易发现并证明两个正交表之间的正交性，并且用例子说明了这种方法的应用．     

狭义相对论百年风雨

介绍狭义相对论中某些争论并澄清一些看法．     

Conformal invariance and Hojman conservedquantities of first order Lagrange systems

In this paper the conformal invariance by infinitesimal transformations of first order Lagrange systems is discussed in detail. The necessary and sufficient conditions of conformal invariance and Lie symmetry simultaneously by the action of infinitesimal transformations are given. Then it gets the Hojman conserved quantities of conformal invariance by the infinitesimal transformations. Finally an example is given to illustrate the application of the results.     

Conformal invariance and conserved quantity of Hamilton systems

This paper studies conformal invariance and conserved quantities of Hamilton system. The definition and the determining equation of conformal invariance for Hamilton system are provided. The relationship between the conformal invariance and the Lie symmetry are discussed, and the necessary and sufficient condition that the conformal invariance would be the Lie symmetry of the system under the infinitesimal one-parameter transformation group is deduced. It gives the conserved quantities of the system and an example for illustration.     

关于λ-数乘收敛级数的不变性

本文证得（1）若λ具有弱滑脊性，那么λ-数乘收敛级数具有对偶不变性。（2）若λ包含C00，那么λ-数乘收敛级数具有全程不变性的充要条件为（λ，β（λ，λβ））是AK－空间。     

JT-60U装置温度分布剖面不变性的实验研究

在一系列H模放电条件下，建立了一个旨在研究等离子体温度分布剖面不变性的数据库。介绍了数据库建立过程中要解决的关键问题和所用软件，对等离子体温度分布剖面不变性及芯部约束与边缘参数的关系进行了研究。     

A conformal invariance for generalized Birkhoff equations

In this article, generalized Birkhoff equations are put forward by adding supplementary terms to the Birkhoff equations. A conformal invariance of the Birkhoff equations can be used to study the generalized Birkhoff Equations, and two examples are presented to illustrate the application of the results.     

“力学系统平衡的判别准则”与虚位移原理

讨论了力学系统平衡的定义,以及虚位移原理充分性成立的先决条件.