Hi, I have problems calculating the eigenvectors of a symbolic matrix.
I tried:
a,b = var('a'),var('b')
M = matrix(SR,4,4,((a, 0, 0, 0), (0,-a,0,0), (0,0,a,0), (0,0,0,-a)))
M.eigenvectors_right()
what results in:
AttributeError: 'SymbolicArithmetic' object has no attribute 'degree'
and
P.<a,b> = PolynomialRing(QQ)
M = matrix(P,4,4,((a, 0, 0, 0), (0,-a,0,0), (0,0,a,0), (0,0,0,-a)))
M.eigenvectros_right()
what gives:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/sage/sagenb/sage_notebook/worksheets/sonium/1/code/
26.py", line 6, in <module>
M.eigenvectors_right()
File "/home/sage/sage_install/sage-a/local/lib/python2.5/site-
packages/SQLAlchemy-0.4.6-py2.5.egg/", line 1, in <module>
File "matrix2.pyx", line 3054, in
sage.matrix.matrix2.Matrix.eigenvectors_right (sage/matrix/matrix2.c:
18020)
File "matrix2.pyx", line 3000, in
sage.matrix.matrix2.Matrix.eigenvectors_left (sage/matrix/matrix2.c:
17523)
File "matrix2.pyx", line 2755, in
sage.matrix.matrix2.Matrix.eigenspaces_left (sage/matrix/matrix2.c:
16250)
File "matrix2.pyx", line 1058, in sage.matrix.matrix2.Matrix.fcp
(sage/matrix/matrix2.c:7456)
File "polynomial_element.pyx", line 2288, in
sage.rings.polynomial.polynomial_element.Polynomial.factor (sage/rings/
polynomial/polynomial_element.c:18681)
NotImplementedError
:(
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