I want to extract the "real part" of a quaternion, i.e., if L.<i,j,k> = QuaternionAlgebra(QQ,-1,-1);
and a is in L, then I want the coefficient of 1 in the expansion of as a linear combination of 1, i, j and k. Is there a way to do this? A graceful way? (I have also discovered that using quaternions in combination with list comprehensions which have i as the dummy variable - [i for i in range(10)] - leads to quite unexpected results. But I suspect this reflects an underlying problem in python...) Thanks in advance for any help. Chris --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
