#5837: bug in rational_diagonal_form() from QuadraticForm class
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Reporter: LBerlioz | Owner: LBerlioz
Type: defect | Status: new
Priority: minor | Milestone:
Component: quadratic forms | Keywords: QuadraticForm diagonal
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The following returns a non-diagonal QuadraticForm:
{{{
sage: Q=QuadraticForm(2*A)
sage: Q.rational_diagonal_form()
Quadratic form in 3 variables over Rational Field with coefficients:
[ -3 -32 5184 ]
[ * -81 26240 ]
[ * * -2125111 ]
}}}
This method works only when the matrix has a diagonal of only ones.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5837>
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