"Nicolas M. Thiery" <[EMAIL PROTECTED]> writes:
> > since I was asked to, I'll try to clarify my ideas to marry finite group
> > actions with species.
>
> Thanks, that definitely helps!
>
> > .. two basic species
> > ..........................................................
>
> > The species of set partitions is probably more complicated, it is
> > already quite complicated when the group acting is a Young subgroup
> > S_n1 x S_n2 x ... But maybe Robert's code could help here.
>
> Do you mean ordered or unordered set partitions? That is do you
> distinguish between the two following set partitions of {1,2,3}?
>
> [{1,2} {3}] and [{3}, {1,2}]
No, unordered. The species of set partition can be thought of
Set o NonEmptySet.
Martin
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Aldor-combinat-devel mailing list
Aldor-combinat-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/aldor-combinat-devel
