#6442: Random(?) index error with determinant method
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Reporter: spancratz | Owner: somebody
Type: defect | Status: needs_review
Priority: major | Milestone:
Component: linear algebra | Keywords: det, determinant,
IndexError, sd35.5
Work_issues: problem is not fixed | Upstream: N/A
Reviewer: | Author: Sebastian Pancratz,
Michael Orlitzky
Merged: | Dependencies:
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Comment(by zimmerma):
two minor points:
(1) the comment {{{Cache the result}}} on line 1465 should be in fact on
line 1470. The code at
line 1465 only initializes an empty cache.
(2) it seems to me that if charpoly is called with the same matrix but
different variables, the computation is done twice, whereas it would
suffice to substitute the first variable by the second one, no? Maybe this
can be in a separate ticket.
Paul
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6442#comment:9>
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