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24 votes
1 answer
1k views

Integrating on $\mathbb{R}$ by summing on $\mathbb{Q}^+$

Does the following integration method hold for regular enough functions $F:\mathbb{R}\to\mathbb{R}$? \begin{align} &\zeta(2)\sum_{\frac{a}{b}\in\mathbb{Q}_n} \frac{F(\log \frac{a}{b})}{\sqrt{abn}...
5 votes
3 answers
718 views

Speed of convergence for Weyl's Equidistribution theorem

If $f$ is a continuous periodic fonction on $[0,1]$ and $a\not\in\mathbb{Q}$, the Weyl's equidistribution theorem states that $$\frac{1}{n}\sum_{k=0}^{n-1}f(ak)\rightarrow \int_0^1 f(x)dx.$$ Can we ...