#11432: LLL function for quadratic forms is wrong
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Reporter: mmasdeu | Owner: justin
Type: defect | Status: new
Priority: minor | Milestone: sage-4.7.1
Component: quadratic forms | Keywords: LLL, quadratic form
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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The function Q.lll() where Q is a QuadraticForm is a one-line wrapper
around LLL_gram(), which in turn calls Pari.
The description of Q.lll() is that it returns an LLL-reduced quadratic
form. However, the function LLL_gram() returns a change of basis matrix,
not the resulting quadratic form.
In my opinion this requires a one-line patch, which I can do if someone
confirms that this is the problem.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11432>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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