Hi! Eric Webster and I want to make some changes to SemistandardTableaux(p,mu). This is the first change I've tried to make to Sage, so I'm not totally sure of the protocol, but it was suggested to me that I should describe here what we plan to do (as well as opening a trac ticket, which I will do shortly).
Mostly, we want to make a change to add a feature, so that one can specify an additional keyword argument max_entry=k so as to get the Semistandard Tableaux(p,mu) with entries in 1..k, or max_entry=-1 so there is no maximum. (Currently, the entries are in 1..|p| unless mu is specified, and I would keep that as the default.) So our proposed change is just an enhancement and presumably won't screw anything up if done right. I do also want to change __repr__ so it always explicitly says what the maximum entry is. While looking at the code, though, I noticed something a bit wierd about the way SemistandardTableaux(p,mu) operates. As it stands, p can be an integer, a partition, or None, and mu is an integer vector describing content. If p is an integer, it returns all tableaux of size p (and with content mu if mu is specified). If p is a partition, it returns all tableaux of shape p (and with content mu if mu is specified). If p is None, it ignores mu. This seems wrong: surely it ought to give you all tableaux of content mu and size |mu|. So I wanted to change that. But it's not because I really need it, it's just tidy-mindedness. If anyone suggests it's a bad idea to do this part, I won't. cheers Hugh -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-de...@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
