Dear Professor Cohen,
Thank you for your reply. Okay you are right. Sage tests if a poset is a
meet semi-lattice by the following commands
>>P4=[p for p in Posets(4) if p.is_meet_semilattice()]
>>for p in P4: show(p.plot())
I understood this and thank you.
My aim is different from my exampl
Dear Jeroen,
The order of strong order tableaux does not really matter.
One place where it might slightly matter might be in character
tables of the symmetric group. As far as I remember they are just
matrices where rows and columns are indexed by integers rather than
by partitions. In this case
cc: sage-combinat-devel
2015-03-15 11:27:33 UTC+1, Jeroen Demeyer:
>
> Hello,
>
> currently in Sage, Partitions() are returned in reverse-lexicographic
> order. But is this order (which is nowhere documented as far as I can
> tell) really important? I am trying to fix Partitions and other relat
