2022年9月19日
Martin Exercise Solution(updating)
摘要： Groups Laws of Composition 1.1 For all $a,b,c\in S$, we have $(ab)c = a = a(bc)$, therefore law of composition in $S$ is associative. Suppose $e$ is t 阅读全文
posted @ 2022-09-19 19:52 o0yo 阅读(33) 评论(0) 推荐(0)