[Scip] help : expressing absolute in linear constraint

[Ambros Gleixner]

Dear Abdelkader Ouali,

this is a standard reformulation question in mixed-integer linear 
programming and what is best depends a bit on your problem.  A bit of 
googling will help, see, e.g.,

http://orinanobworld.blogspot.de/2012/07/modeling-absolute-values.html

Best regards,
ambros



Am 15.07.2014 11:19, schrieb Abdelkader Ouali:
> Dear SCIP users,
>
> Is there a way to express absolute in linear constraint
> like*lhs <= |c1x1 - c2x2| <= rhs*
>
> Kind regards
>
> ---
> Abdelkader Ouali
>
>
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-- 
____________________________________________________________
Ambros M. Gleixner
Zuse Institute Berlin - Matheon - Berlin Mathematical School
http://www.zib.de/gleixner