Hello, I have a problem.
I created two sets i and j for the variable X_i,j.
Now I want to add a constraint to see if the sum of all X_i,j with i="specific value” is equal to 10.
My guess would be something like:
sum[ ("Specific value”,j), variable(i,j) ] = 10;
But this obviously doesn't work, otherwise I wouldn't be asking.
Best answer by Chris KuipView original