Re: [Help-glpk] Tricky constraint formulation

[Andrew Makhorin]

On Wed, 2011-03-09 at 06:30 -0800, teitifeiti wrote:
> 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

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