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arXiv · 1410.3894

A short proof of a known result about the density of a certain set in $[0,1]^n$

Dimitri Dias
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Abstract

In Theorem 1 of Acta Arith. 99 (2001), 321-329, Cobeli and Zaharescu give a result about the distribution of the ${\bf F}_p$-points on an affine curve. An easy corollary to their theorem is that the set $\bigcup_p \lbrace (\frac{x_1}{p}, ...,\frac{x_n}{p}), 1 \leq x_i < p \text{and} \prod_{1 \leq i \leq n} x_i \equiv 1 \bmod{p} \rbrace$ is dense in $[ 0,1 ]^n$. In Integers 7 (2007), A7, Foo gives a elementary proof of that fact in dimension $2$. Following Foo's ideas, we give a similar proof in dimension greater than or equal to $3$.

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Dimitri Dias. 2014-10-14. A short proof of a known result about the density of a certain set in $[0,1]^n$. https://arxiv.org/abs/1410.3894

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