> It is likely
> (I do not understand much about the changes and the #14019 issue)
> that indeed 'relabel()' is based on existing code, which is probably buggy,
> so the bug #14019 is only a subsequent error. At the same time I conclude
> that 'relabel()' was
> not sufficiently tested! Responsible for the latter in my opinion are Anne
> and the reviewer.
> Of course this does not help much to solve the issue...
The real issue is the FinitePoset code:
sage: d = DiGraph({0:[2],1:[2]})
sage: from sage.combinat.posets.posets import FinitePoset
sage: P = FinitePoset(d,elements=[1,2,3])
sage: Q = FinitePoset(d,elements=[2,1,3])
sage: P == Q
False
sage: P.hasse_diagram() == Q.hasse_diagram()
True
It has nothing to do with the relabel function.
Regards,
Anne
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