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[Fwd: [Help-glpk] Tricky constraint formulation]

From: Andrew Makhorin
Subject: [Fwd: [Help-glpk] Tricky constraint formulation]
Date: Wed, 09 Mar 2011 18:40:35 +0300

-------- Forwarded Message --------
From: teitifeiti <address@hidden>
To: address@hidden
Subject: [Help-glpk] Tricky constraint formulation
Date: Wed, 9 Mar 2011 06:30:33 -0800 (PST)

Hello everyone. 

I have a problem in formulating a constraint. The constraint is:
 C[r,i] - C[r,k] + P*D[i,k] >= T[r,i]    where    (1 <= r <= M ; 1 <= i < k
<= N);

So what I tried first was: 

s.t. constraint{r in 1..R,i 1..I,k in 1..I}

But that constraint holds for all k < i, which I don't want it to do. 

Does anyone have a cool solution to my problem??

Respectfully, TeitiFeiti

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