On Sun, Feb 19, 2012 at 03:27:08PM -0800, Andrew Mathas wrote: > It looks like this patch already has a positive review.
Yeah, thanks Florent! Feel free to double check the change to the Iwahori-Hecke file. > I'm also stuck in limbo with sage at the moment as I foolishly > upgraded to macosx lion, so I'm still using 4.7.1 as I can't compile > from source. I am looking forward to the release of sage 5.0:) Yeah ... > I am right in thinking that run_snake or it is runsnake?) is available > from 4.7.2 onwards? Yes. You need to install the runsnake program itself separately though (see runsnake? for details). > It looks like it is now faster than gap. Good to know. > I'll have to wait until I play with it properly in sage 5 to see how > it behaves for larger tableaux. Yeah; so far the gain was mostly about constant time factors. More experiments need to be run to make sure the complexity is reasonable. Keep us updated! > > sage: CyclotomicField(5)['xi'].fraction_field() > > I think that I want > > sage: xi=e**(2*pi*i/5); > R=FractionField(PolynomialRing(ZZ[xi],'x')) That would work indeed. Using CyclotomicField is probably a bit faster than a generic number field though: sage: xi=e**(2*pi*i/5); sage: QQ[xi] Number Field in a with defining polynomial x^4 + x^3 + x^2 + x + 1 sage: ZZ[xi] Order in Number Field in a with defining polynomial x^4 + x^3 + x^2 + x + 1 But you are right, my construction should have read: sage: CyclotomicField(5, 'xi')['x'].fraction_field() Fraction Field of Univariate Polynomial Ring in x over Cyclotomic Field of order 5 and degree 4 Cheers, Nicolas -- Nicolas M. Thiéry "Isil" <nthi...@users.sf.net> http://Nicolas.Thiery.name/ -- 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-devel@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.