1. Theorem 1 and are equivalent infinitesimals if and only if. Theorem 2 The product of a bounded function and an infinitesimal is an infinitesimal.
定理1与是等阶无穷小的充分必要条件为。
2. In the 19th century, infinitesimals were replaced by limits.
在19世纪，无穷小，取而代之的限制。
3. Then two theorems are given for judging a product of infinite infinitesimals being an infinitesimal.
然后给出判定无穷多个无穷小之积是无穷小的两个定理。
4. In the19th century, infinitesimals were replaced by limits.
在19世纪，无穷小，取而代之的限制。
5. This paper treat infinitesimals of the same order.
文章论述了同阶无穷小。
6. On the product of countable infinitesimals
关于可列个无穷小的乘积
7. On the product of infinite infinitesimals
关于无穷多个无穷小之积
8. In this paper, first by making a group of examples, it is illustrated that product of infinite infinitesimals is an indeterminate form.
先通过构造的一组实例说明无穷多个无穷小之积是不定式。
9. Some Aspects of Machine Learning Infinitesimals in Economics
经济学中的无穷小
10. Two Rules for Equivalent Infinitesimals
等价无穷小的代换法则二、末日意识
11. The Order of Infinitesimals and Its Application
无穷大函数的阶及其应用