#11782: Bug in discriminant of polynomials over Z/nZ with n composite
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Reporter: johanbosman | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.2
Component: algebra | Keywords: polynomial, discriminant, integer
mod ring
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by johanbosman):
The first problem is caused by the fact that FLINT doesn't compute
resultants correctly. This is also mentioned in FLINT's documentation:
see p. 58 of http://www.flintlib.org/flint-1.6.pdf: n must be prime to
compute resultants correctly.
The second problem is of course caused by the fact that the leading
coefficient is a zero divisor.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11782#comment:1>
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