> * There are some remaining hard problems in graphs, under current scrutiny 
> I think.
>

The main remaining issues in the graph module are related to isomorphisms, 
automorphisms, and related methods.

1) #27571: align behaviors of algorithm 'sage' and 'bliss' in 
`automorphism_group` and fix a doctest in 
MathonPseudocyclicStronglyRegularGraph generator.

When finalized, we will have to fix bugs with `automorphism_group`, 
`PermutationGroupElement`, and possibly other methods.

2) fix `is_isomorphic` for graphs with edge labels. 
A first attempt is done in #27232 <https://trac.sagemath.org/ticket/27232>, 
but this proposal is certainly not satisfactory. One issue is that we can 
sort lists of unhashable objects (of different types).

3) #27435 deal with a failing doctest in graph_database.py with 
interactive_query 

Help is more than welcome !!

David.

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