Re: [Bug-glpk] Defining operational summaten

[Heinrich Schuchardt]

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