> The only reason why we don't have cartan matrices, as matrices, is > that we don't have (yet!) matrices with rows and columns indexed by > anything (instead of just 0...n-1); e.g. the analog for matrices of > CombinatorialFreeModule elements w.r.t. FreeModule elements.
What about allowing a skew-symmetric matrix (and an optional indexing list) as input for DynkinDiagram? -- 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.
