Anne Schilling <a...@math.ucdavis.edu> writes:
> Hi Martin,
>
> Promotion is defined on semistandard tableaux over the totally ordered
> alphabet
> say {1,2,...,n+1}. Your example below
>
> sage: t = Tableau([[3, 2, 1]])
>
> is not a semistandard tableau since it is decreasing in its row. Before
> promotion
> was only implemented for rectangle, now it is supposed to work for
> semistandard
> tableaux of arbitrary shape over the alphabet {1,2,...,n+1}.
Yes, I know, that's where the smiley came from... I should have asked
more plainly: isn't there a class for semistandard tableaux?
Martin
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