摘要: Proof: Let \(S_n(a)=\sum_{x_1+\cdots + x_n\equiv a} \left(\frac{\prod x_i}{p}\right)\). For \(a\ne 0\), \(S_2(a)=S_2(1)\). \(S_2(1) = \sum_{x\ne 0} \l 阅读全文
posted @ 2021-10-09 23:04 CauchySheep 阅读(595) 评论(0) 推荐(1) 编辑