[SCIP] ZIMPL : unexpected varsym

[Felipe Serrano]

Hi Monia

It seems that zimpl still doesn't allow to write variables in the
denominator, so if you instead use:
P[i] >= lambda * (C + sum <j> in T with j!=i  do  P[j] * C);
it is fine
(assuming that  (C + sum <j> in T with j!=i  do  P[j] * C) is always >= 0)

If not, you can try using something like
aux_var[i] * (C + sum <j> in T with j!=i  do  P[j] * C) = 1
P[i] * aux_var[i] >= lambda

Best
Felipe


On Sun, Nov 22, 2015 at 7:20 PM, monia hamdi <monia.hamdi at yahoo.fr> wrote:

> Dear,
>
> I get syntax error : unexpected varsym (in P[j])
>
> set         T:={1 .. 9};
> param C : 5;
> var P[T]  real ;
>
> var lambda real;
>
> maximize  cost: lambda;
>
> subto minP:
> forall <i> in T :
> P[i] / (C + sum <j> in T with j!=i  do  *P[j]* * C) >= lambda;
>
>
> Thank you
> Monia
>
>
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