> sage: a=1 > sage: a+a > 2-------------------------------------------------> NOT ok: why is > this not 0?
because you just set a to the integer 1. Python and Sage are not strongly typed, so you can assign any type to any variable and you just overwrote the previous definition of a which was in the boolean polynomial ring. Try A(1) for the constant 1 in A for which A(1) + A(1) holds. Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _www: http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~---------~--~----~------------~-------~--~----~ 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-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
