Hi Nicolas, Could you confirm the following bug? It seems to appear both with and without combinat applied:
---------------------------------------------------------------------- | Sage Version 4.4, Release Date: 2010-04-24 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- Loading Sage library. Current Mercurial branch is: combinat sage: D = CombinatorialFreeModule(QQ, Partitions(), prefix='d'); sage: d = D.basis(); sage: s = SymmetricFunctions(QQ).schur() sage: def func(p): ....: if len(p)==0: return 1 ....: else: return p[0] sage: D_to_Schur = D.module_morphism(diagonal=func, codomain=s) sage: Schur_to_D = ~D_to_Schur sage: D_to_Schur(Schur_to_D(2*s([2,1]))) -12*s[2, 1] Note that the following seems to work, though: sage: X = CombinatorialFreeModule(QQ, Partitions(), prefix='x'); sage: x = X.basis() sage: D_to_X = D.module_morphism(diagonal=func, codomain=X) sage: X_to_D = ~D_to_X sage: D_to_X(X_to_D(2*x[Partition([2,1])])) 2*x[[2, 1]] Preparing for a talk seems to be a good spotlight for bugs! Cheers, Jason -- 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.
