Topological conjugacy between Schneider's continued fraction map and a shift map on $\mathbb{Q}_p$

Abstract

We prove that Schneider's continued fraction map is topologically conjugate to a shift map defined on $\mathbb{Q}_p$, and the topological conjugation $f\colon\mathbb{Q}_p \rightarrow \mathbb{Q}_p$ is an isometry such that $f(\mathbb{Q})=\mathbb{Z}[\frac{1}{p}]$. Furthermore, for $x \in \mathbb{Q}_p$ we proved that $x \in \mathbb{Q}$ if and only if $f(x) \in \mathbb{Z}[\frac{1}{p}]$.