提出了问题
2020-04-29 21:58
begin{equation}psi(c) &= dfrac{1}{q} sum_{d in F_{q}^*} psi(d) sum_{bin F_{q}} chi_{b}(c) overline{chi_{b}(c)}\ &= dfrac{1}{q} sum_{b in F_{q}} chi_{b}(c) sum_{din F_{q}^*} psi(d) bar{chi}_{b...