#4120: New code for binary quadratic forms
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Reporter: justin | Owner: tbd
Type: enhancement | Status: new
Priority: major | Milestone:
Component: algebra | Keywords:
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The code supporting binary quadratic forms, in
quadratic_forms/binary_qf.py, is missing some functionality, and relies on
Magma and Pari. The patch in this ticket provides the following changes:
- tests for equivalence, normal, positive and negative definite,
indefinite, primitive forms
- normalize a form
- action of matrix on a form
- find content; factor indefinite forms
In addition:
- reduce() no longer calls Pari
- some cleanup: is_reduced() is rewritten; polynomial() replaced with an
instance variable (poly)
Doctests are in place for the new code, so the file remains at 100%
coverage.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4120>
SAGE <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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