随笔分类 -  rudin exercises

Chap 3. Exercise 1
摘要：Prove that ${s_n}$ converges implies that ${|s_n|}$ converges. Is the converse true? Suppose $\lim\limits_{n\to\infty}s_n=s$. $\forall \varepsilon>0,\ 阅读全文
posted @ 2022-10-14 11:20 feicheng 阅读(26) 评论(0) 推荐(0)