#12332: MixedIntegerLinearProgram().new_variable docs don't mention
nonnegativity
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Reporter: dimpase | Owner: mvngu
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: documentation | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Description changed by dimpase:
Old description:
> the documentation on MixedIntegerLinearProgram().new_variable does not
> mention that by default the corresponding variables are assumed to be
> nonnegative.
>
> The only place this is mentioned is
> [http://www.sagemath.org/doc/thematic_tutorials/linear_programming.html
> LP Thematic Tutorial]. It says:
> "By default, all the LP variables are assumed to be non-negative reals.
> They can be defined as binary through the parameter binary=True (or
> integer with integer=True). Lower and upper bounds can be defined or re-
> defined (for instance when you want some variables to be negative) using
> the methods set_min and set_max."
>
> This must appear in regular docs, too.
New description:
the documentation on MixedIntegerLinearProgram().new_variable does not
mention that by default the corresponding variables are assumed to be
nonnegative.
The only place this is mentioned is
[http://www.sagemath.org/doc/thematic_tutorials/linear_programming.html LP
Thematic Tutorial]. It says:
"By default, all the LP variables are assumed to be non-negative reals.
They can be defined as binary through the parameter binary=True (or
integer with integer=True). Lower and upper bounds can be defined or re-
defined (for instance when you want some variables to be negative) using
the methods set_min and set_max."
This must appear in regular docs, too.
Apply the attached patch to remedy this.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12332#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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