Hey all, Just a note for people working on linear algebra that eigenspaces for real matrices don't work:
M = MatrixSpace(RR, 3,3) A = M([3,67,4,2,246,e,3,246,e+1]) A.eigenspaces() returns [ (-0.218769859879233, [ ]), (3.62798619883961, [ (1.00000000000000, -1.51195385390357, 1.21729796888225) ]), (249.309065489499, [ ]) ] It's just subtracting off the root of the characteristic polynomial and taking the kernel, which often won't work when the field is inexact. Davdi --~--~---------~--~----~------------~-------~--~----~ 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://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
