#14540: Fix complicated MILP constraints
-------------------------------------+-------------------------------------
Reporter: ncohen | Owner: ncohen
Type: defect | Status: needs_work
Priority: major | Milestone: sage-7.2
Component: linear | Resolution:
programming | Merged in:
Keywords: | Reviewers:
Authors: Jeroen Demeyer | Work issues:
Report Upstream: N/A | Commit:
Branch: | ba7613b12a717f7ca72137d9c91d7edca5f6cbbb
u/jdemeyer/milp_constraints_do_no_deal_with_python_ints_properly|
Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Old description:
> {{{
> sage: p = MixedIntegerLinearProgram()
> sage: b = p.new_variable()
> sage: int(1) <= b[0] <= int(2)
> x_0 <= 2
> }}}
New description:
{{{
sage: p = MixedIntegerLinearProgram()
sage: b = p.new_variable()
sage: int(1) <= b[0] <= int(2)
x_0 <= 2
}}}
{{{
sage: p = MixedIntegerLinearProgram()
sage: b = p.new_variable()
sage: b[0] <= 3 <= 4 <= b[1]
4 <= x_1
}}}
{{{
sage: p = MixedIntegerLinearProgram()
sage: b = p.new_variable()
sage: float(0) <= b[0] <= int(1) <= b[1] <= float(2)
1 <= x_1 <= 2
}}}
{{{
sage: p = MixedIntegerLinearProgram()
sage: b = p.new_variable()
sage: b[0] <= 555*b[1] >= 2
2 <= x_0 <= 555*x_1
}}}
--
Comment (by jdemeyer):
Allright, let's fix everything on this ticket...
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Ticket URL: <http://trac.sagemath.org/ticket/14540#comment:17>
Sage <http://www.sagemath.org>
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