摘要: This article is made by Jason-Cow.Welcome to reprint.But please post the article's address. 莫比乌斯定理(未完待续......): 形式1: 形式2: 引理: 证明1: 右边=带入左边等式,得 又当且仅当 : 阅读全文
posted @ 2017-03-14 20:13 墨鳌 阅读(218) 评论(0) 推荐(0) 编辑