On Mon, Mar 09, 2020 at 05:20:02PM -0700, Soheli Das wrote:
> I was trying to list the King tableaux of a particular shape. Here's the
> function:
>
> def list_of_king_tableaux(t_shape, t_max_entry):
> """A function which finds the list of King tableaux of given shape."""
> return list([t for t in SemistandardTableaux(t_shape,
> max_entry=t_max_entry) if is_king_tableau(t)])
>
> And this is the output I got:
>
> sage: list_of_king_tableaux([2,2],4)
> [[[1, 1], [3, 3]],
> [[1, 1], [3, 4]],
> [[1, 1], [4, 4]],
> [[1, 2], [3, 3]],
> [[1, 2], [3, 4]],
> [[1, 2], [4, 4]],
> [[1, 3], [3, 4]],
> [[1, 3], [4, 4]]]
>
> The list shows the tableaux that are not king tableaux. How do I choose the
> ones that obey the king tableaux condition?
The way you use is_king_tableau in list_of_king_tableaux looks
correct. So test that is_king_tableau indeed return false on the
undesired tableau.
Btw: list([...]) is redundant; [...] is equivalent. In addition,
iterators are most of the time better than lists. If you haven't done
so yet, I really recommend the iterators thematic tutorial.
Cheers,
Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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