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[Help-glpk] Questions to MathProg

From: Gottfried Lindner
Subject: [Help-glpk] Questions to MathProg
Date: Wed, 11 May 2005 11:51:43 +0200


I have two questions to MathProg.

1) I have a set I, which is an interval. Instead of writing
        set I := 1 2 3 4 5;
I thought, I can write
        set I := 1 .. 5;
but this is not correct. What's wrong?

2) I have a restriction of the form
s.t. Rb{v1 in V,v2 in V: v1<v2}: ...
This works, if V contains numbers. If V contains symbols, v1<v2 is not
Is there a function to convert symbols to their position in the set or
something like that?


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