线性规划可行解的一个性质

通过对线性规划问题可行解的性质的推广,导出推广后的可行解与对应的对偶线性规划的约束条件之间互为充分必要的关系。     

Hamilton临界图Cm,n的派生图类Cm,n的简单性质

Hamilton临界图Cm,n是一个重要图类,当其中的某些参数、边的关联方式或边的数量等发生变化时,将产生一个新的有趣图类Cm,n(称为Cm,n的派生图类),通过对图类Cm,n的Hamilton性的讨论,得出了图类Cm,n存在Hamilton圈的克要条件.     

Hamilton临界图C_(m,n)的派生图类C′_(m,n)的简单性质

Hamilton临界图Cm,n是一个重要图类,当其中的某些参数、边的关联方式或边的数量等发生变化时,将产生一个新的有趣图类C′m,n（称为Cm,n的派生图类）,通过对图类C′m,n的Hamilton性的讨论,得出了图类C′m,n存在Hamilton圈的充要条件.     

中值函数单调性探讨

本文探讨了中值函数单调性及广义积分中值定理。     

二维连续型随机变量相关计算的积分限确定问题

对二维连续型随机变量的积分定限问题进行了简要的归纳和总结,并给出了几类常见计算的基本方法和技巧,以期对学生的积分计算有所帮助.     

Hojman's theorem of the third-order ordinary differential equation

This paper extends Hojman's conservation law to the third-order differential equation. A new conserved quantity is constructed based on the Lie group of transformation generators of the equations of motion. The generators contain variations of the time and generalized coordinates. Two independent non-trivial conserved quantities of the third-order ordinary differential equation are obtained. A simple example is presented to illustrate the applications of the results.     

Noether's theory of Lagrange systems in discrete case

In this paper, Noether theory of Lagrange systems in discrete case are studied. First, we briefly overview the well-known Noether theory of Lagrange system in the continuous case. Then, we introduce some definitions and notations, such as the operators of discrete translation to the right and the left and the operators of discrete differentiation to the right and the left, and give the conditions for the invariance of the difference functional on the uniform lattice and the non-uniform one, respectively. We also deduce the discrete analog of the Noether-type identity. Finally, the discrete analog of Noether's theorem is presented. An example was discussed to illustrate these results.     

改进的辅助线性规划问题

本文改进了线性规划问题中求初始可行基的方法,使得任一个辅助线性规划问题只需引入一个辅助变量即可达到目的,简化了运算。     

用Microsoft Excel处理方差分析数据

文本有效运用了计算机应用软件MicrosoftExcel的基本功能,自己动手设计数理统计中方差分析的数据处理和检验判断程序,并能举一反三,解决数理统计中所有统计量的计算问题,使数理统计的课堂教学避免了大量、复杂的数据困扰,大大提高了学生的学习兴趣和主动学习精神,培养了学生的动手能力和创造性。     

完整约束力学系统保Lie对称性差分格式

提出一种保完整约束力学系统Lie点对称性的差分格式.其具体做法是:首先求出完整约束力学系统的Lie点对称群,并将其延拓到离散的差分格点上;其次利用其特征方程找出独立的离散不变量;再应用独立的离散不变量来构造不变量的差分格式,且此差分格式在连续极限下应给出原系统的微分方程;最后给出一个例子,作为本文结果的说明.