<div id="comment:0"></div> also one or two tweaks in the code CC: @tscrim @slel @mantepse Component: **quadratic forms** Author: **Frédéric Chapoton** Branch/Commit: **[`9dc18ec`](https://github.com/sagemath/sagetrac-mirror/commit/9dc18eccad24a06de04f393854a4ecbff866c31a)** Reviewer: **Travis Scrimshaw** _Issue created by migration from https://trac.sagemath.org/ticket/34643_