#12514: default behavior of matrix([...]).eigenvectors_right() should be sane
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Reporter: ppurka | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-6.2
Component: linear algebra | Resolution:
Keywords: matrix eigenvectors | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by eviatarbach):
* cc: eviatarbach (added)
Comment:
I don't know if this is related, but why does
{{{
sage: matrix(ZZ, [[6, -5], [1, 2]]).eigenvectors_right()
[(4 - 1*I, [(1, 0.4000000000000000? + 0.2000000000000000?*I)], 1),
(4 + 1*I, [(1, 0.4000000000000000? - 0.2000000000000000?*I)], 1)]
}}}
return inexact eigenvectors? They could be computed exactly. Doing the
same in SR returns exact results, but shouldn't matrices over ZZ or QQ try
to get exact eigenvectors when possible?
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Ticket URL: <http://trac.sagemath.org/ticket/12514#comment:11>
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