摘要: \[ we\,\,want\,\,to\,\,prove\,\,that \\ ad\left( ab \right) -ad\left( ba \right) =ad\left( a \right) ad\left( b \right) -ad\left( b \right) ad\left( a 阅读全文
posted @ 2022-04-03 21:09 narip 阅读(29) 评论(0) 推荐(0)