> > Permutation groups used to only handle permutations of 1,..n, and the > methods permute_rows and friends of matrices coped with this with an > ugly and potentially confusing shift by 1.
EVERYBODY is using those -1 and +1 everywhere. Those 1-based permutations are just hell for whoever uses the code. Happens in graphs too, and in combinatorial designs. > After this ticket, > permutation of 0,...,n-1 are accepted and handled as can be > expected. For permutations of 1..n and subsets thereof, the behavior > is unchanged for backward compatibility. > What about doing the job properly and respecting our own standards ? If you want to use 0-based permutations (and I am pretty sure that we all do), let's change this %*%*%$(&*(#&%_ permutation class to do what it should have been doing all along ! Nathann -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
