拟微分 meaning in English

quasi-differential

The relation and difference of the two kinds of differential - like operator
关于两类拟微分算子的联系与差别
3 . chapter 4 is devoted to the study of diferential structure in quasidiferential analysis - quasidiferential structure
在第4章中，研究了拟可微分析中的微分结构?拟微分结构。
This chapter proposes three conceptions , i . e . , kernelled quasidiferential , star - kernel and star - diferential , and establishes their operational properties . a sufficient theorem and a sufficent and necessity theorem for a quasi - kernel being a kernelled quasidiferential are proven . both the existence of star - kernel for a quasidiferentiable function and the existence of star - differential for a direnction - ally diferentiable function are established
在这一章里，首先给出核拟微分，星核与星微分的定义及其它们的运算性质；然后证明了拟核微分的一个充分条件定理及一个充要条件定理；最后讨论拟可微函数星核的存在性及方向可微函数星微分的存在性以及penot -微分与上下导数之间的关系。