Re: [sage-combinat-devel] bug in root systems

2012-04-12 Thread Anne Schilling
On 4/12/12 11:33 PM, Christian Stump wrote: >> Mark pointed out the following bug to me in root_systems: > > I guess that was my fault. Thanks for pointing it out - I will fix it > and create a ticket. Thanks! Anne -- You received this message because you are subscribed to the Google Groups "

Re: [sage-combinat-devel] bug in root systems

2012-04-12 Thread Christian Stump
> Mark pointed out the following bug to me in root_systems: I guess that was my fault. Thanks for pointing it out - I will fix it and create a ticket. Best, Christian -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group

[sage-combinat-devel] bug in root systems

2012-04-12 Thread Anne Schilling
Hi! Mark pointed out the following bug to me in root_systems: sage: R = RootSystem(['A',1]).root_lattice() sage: P = R.root_poset(); P Finite poset containing 0 elements It should contain one element since sage: sorted(R.positive_roots()) [alpha[1]] Isn't this related to the fact that in the p

[sage-combinat-devel] Spirit of Facades

2012-04-12 Thread Nicolas Borie
Hello, I would like to have some precision about Facades. In the Facade code, the documentation say : ** A *facade set* is a parent ``P`` whose elements actually belong to some other parent ** I don't want to play with the sense of words and especially the sense of the word