否命题

本文探讨了Leibniz定理的否命题情形，并给出绝对收敛性定理的另一种证明方法。

This paper discusses the negative proposition of Theorem Leibniz and presents another proving method of absolute Convergence Theorem .

关于级数中的几个定理的逆否命题

On the Inverse Negative Propositions of Some Theorems in Series

通过《数学分析》中复合命题的逆否命题的剖析，探究了其逆否命题潜在的涵义和应用价值。

This paper searched the potential connotation and applied value of the contrapositivity of compound proposition by analysis of contrapositivity of compound proposition in 《 Mathematical Analysis 》 .

神经系统的氧利用问题更是关乎机体健康与否的重要科学命题。

How the nervous system uses oxygen is an important scientific proposition for health of the body .

氧是生命活动的基本物质之一，机体氧利用问题是关乎生命健康与否的重要科学命题。

Oxygen is the essential element for life . How the life body utilizes oxygen is an important scientific proposition for health .