王永强先生证明了如下公式: \begin{equation*} \sum_{n \leqslant x} \sum_{m\leqslant x} \Big\{ \frac{x}{m+n} \Big\} = \left(2\log2-\frac{\zeta(2)}{2}\right)x^{2} +O Read More
posted @ 2018-12-10 18:38 彭道意 Views(369) Comments(0) Diggs(1) Edit