That could be also done as from numpy import fromfunction
matrix(fromfunction(lambda i,j:i-j, (6,6), dtype=int)) [ 0 -1 -2 -3 -4 -5] [ 1 0 -1 -2 -3 -4] [ 2 1 0 -1 -2 -3] [ 3 2 1 0 -1 -2] [ 4 3 2 1 0 -1] [ 5 4 3 2 1 0] _.parent() Full MatrixSpace of 6 by 6 dense matrices over Integer Ring Alec Mihailovs -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org