The original database does not provide a value for the braid_notation of the unknot. Thus this value has been set individually in the interface, but unfortunately this value corresponds to a disjoint union of two unknots. This bug remained unnoticed because the construction of a link from a braid in Sage erases all additional unknots.

Component: algebraic geometry

Author: Sebastian Oehms

Branch/Commit: 99345e1

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/33966