>> We have that, but I think it uses the unconventional R to L rather >> than L to R convention: >> >>>>> p=Permutation >>>>> p([[1,2],[0],[3]])*p([[2,3],[0],[1]] >> ... ) >> Permutation([0, 2, 3, 1]) >>>>> _.cyclic_form >> [[1, 2, 3], [0]] >> >> >> http://en.wikipedia.org/wiki/Cycle_notation says that the answer of >> the above should be (132) not (123) (which is what SymPy gives when >> the order of multiplication is reversed). >> > > Actually, that is very bad I think. If it doesn't follow standard > conventions and notations, > people will not use it.
I've got this fixed but there are lots of failures in other areas of combinatorics so i might as well close this for now. I (as you) consider this a show stopper. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
