#13650: Base rings for MIP backends
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Reporter: vbraun | Owner: ncohen
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.5
Component: linear programming | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: Dima
Pasechnik, Volker Braun
Authors: Volker Braun, Dima Pasechnik | Merged in:
Dependencies: #13646, #12533 | Stopgaps:
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Changes (by {'newvalue': u'Volker Braun, Dima Pasechnik', 'oldvalue': ''}):
* status: new => needs_review
* reviewer: => Dima Pasechnik, Volker Braun
* author: => Volker Braun, Dima Pasechnik
Old description:
> The MIP backends just need a method base_ring(), say, that returns the
> base ring that the backend wants.
New description:
The MIP backends just need a method base_ring(), say, that returns the
base ring that the backend wants.
Apply
* [attachment:trac_13650_base_ring.patch]
* [attachment:trac_13650_normalize_coefficients.patch]
--
Comment:
The patch now enforces that the coefficients are in the base ring. Also,
pretty printing is fixed. There is also a way to change the default for
the multiplication symbol if you want to.
I noticed that the `mip.show()` code doesn't use the pretty printing of
linear functions but rolls its own, so its output is unchanged for now.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13650#comment:8>
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