For binary trees, I have made http://trac.sagemath.org/ticket/18698  that 
needs review.

Le dimanche 14 juin 2015 10:19:22 UTC+2, Frédéric Chapoton a écrit :
>
> Indeed, the failure for binary trees should come from canonical labeling. 
> It would be enough to
> change the doctest so that they are no longer sensitive to that.
>
> I am no longer that sure that TOPCOM is the other problem. What other 
> package is delaing with homology ? chomp ?
>
> Frederic
>
> Le dimanche 14 juin 2015 10:09:23 UTC+2, Nathann Cohen a écrit :
>>
>> > I would suspect that topcom should be responsible for the homology 
>> errors. 
>> > 
>> > No idea for what happens to binary trees. They seem to be reversed 
>> (left-right symmetry ?) 
>>
>> That could be 'bliss'. It becomes the default algorithm to compute 
>> automorphism groups of graphs and canonical representatives. Those 
>> canonical representatives will be different from the previous ones, 
>> though. 
>>
>> Nathann 
>>
>

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