#13711: charpoly error on matrices with pi
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Reporter: eviatarbach | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-5.10
Component: linear algebra | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by eviatarbach):
Okay, I think I found the source of the error; Sage tries to coerce the
pyobjects of the symbolic constants into the Symbolic Ring, which doesn't
work:
{{{
sage: SR(pi.pyobject())
TypeError
sage: SR(euler_gamma.pyobject())
TypeError
}}}
What would be the best way to fix this? It seems to be quite a major
problem, since characteristic polynomials cannot at the moment be computed
for any matrices with symbolic constants (it does work for `e`, since it
is defined differently, and `golden_ratio`, since it is replaced with its
numerical value before running into this error).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13711#comment:1>
Sage <http://www.sagemath.org>
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