1.求证
(∑i=1p−1i−1) mod p2=0( \sum\limits_{i=1}^{p-1} i^{-1} )\bmod p^2=0(i=1∑p−1i−1)modp2=0
2.有大佬能推荐讲代数数论和解析数论的书吗
