<div id="comment:0"></div> This is so we can define methods that require rational data in `Polyhedron_QQ`, and they will become available to polyhedra defined with integral data. CC: @jplab @videlec Component: **geometry** Keywords: **days84** Author: **Matthias Koeppe** Branch/Commit: **[`67eb1d7`](https://github.com/sagemath/sagetrac-mirror/commit/67eb1d7e74c7eaa0bf640550cdf60160a7a893ef)** Reviewer: **Jean-Philippe Labbé** _Issue created by migration from https://trac.sagemath.org/ticket/22568_