sage: version()
'Sage Version 4.0.1, Release Date: 2009-06-06'
sage: var('a d')
(a, d)
sage: A = matrix([[a,0],[1,d]])
sage: A.eigenvalues()
[d, a]
sage: A.jordan_form()
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
/home/bo198214/.sage/temp/darkdepth/6404/
_home_bo198214__sage_init_sage_0.py in <module>()
/usr/src/sage-4.0.1-linux-Debian_GNU_Linux_5.0_lenny-sse2-x86_64-Linux/
local/lib/python2.5/site-packages/sage/matrix/matrix2.so in
sage.matrix.matrix2.Matrix.jordan_form (sage/matrix/matrix2.c:27915)()
RuntimeError: Some eigenvalue does not exist in Symbolic Ring.
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