Hello Frank,
I wonder why you are sending this to the bug list and not to the help list.
Please, read doc/gmpl.pdf from the GLPK source distribution.
Possibly you are looking for something like:
sum{i in V, j in V: i != j} w[i,j,k]
Best regards
Heinrich Schuchardt
On 02/25/2017 09:42 PM, Bogers, F.R. wrote:
> Hi everybody,
>
> How do i code the following summation in one of my constraints?
>
> *∑ with underneath: j'*≠j ∈ V
>
> For this particular summation in my constraint i want to only sum the
> waiting time of all other vessels.
>
> Total constraint is:
>
> WTijk ≥ *∑ **j'*≠j ∈ V *∑ k'<k* ∈ V "formula"
>
> Thanks in advance!
>
> Frank
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