infinitesimals

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。

In the 19th century, infinitesimals were replaced by limits.

在19世纪，无穷小，取而代之的限制。

On equivalent transformations of infinitesimals and their popularization

关于无穷小的等价替换及其推广