Sorry for the previous mail !!! I didn't paste everything I meant to. > > I certainly want to be able to create 0x0 matrices, and would insist > > that the determinant is 1. So it seems consistent to say that such a > > matrix is invertible; and then there isn't much choice for the > > inverse! > > Agreed !!! The following current behavior is indeed inconsistent:
sage: A = random_matrix(QQ,0,0) sage: A.det() 1 sage: ~A [] sage: A^(-1) --------------------------------------------------------------------------- ZeroDivisionError Traceback (most recent call last) Cheers, Florent --~--~---------~--~----~------------~-------~--~----~ 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/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
