This is a quick node project template for demoing Codespaces. It is based off of the Azure node sample. It's great!!!
This sentence uses $ delimiters to show math inline:
The Cauchy-Schwarz Inequality
集合
至于该集合不是紧的,是因为容易得到存在该集合的一个序列都没有收敛子列(怎么构造?提示:注意到不同元素之间的距离都是2,而且