摘要: Ring Theory 4.8 Definition: A ring ​ is a set together with two binary operation together with "​" and "​", obeying: ​ is an Abelian group. ​ is assoc 阅读全文
posted @ 2024-05-27 16:14 tzc_wk 阅读(81) 评论(0) 推荐(0) 编辑