Iason Liagkas

Thanks Jaromił

Jaromił my bad, I had some parameters produced by a probabilistic process. I fixed it and I get deterministic results. Kind regardsIason

Thanks Jaromił

Thanks Marika

I can give you a presentation if you want to your time zone to present and explain everything. 

Thank you both!

If the code runs with alternatives 1,3 then this means that if there is a bug is on the lines of the 2nd alternative or in the lines the variables of the 2nd alternative are defined. But those line...

Thanks Eli. My model is Constraint 4 is named the BPR function. I have 3 alternative ways of modeling it: The first one is to drop the fourth power: This is not wanted. It is just a test. The code ...

The variable kfa is defined as: #kf_akfa = model.addVars(arcs, vtype=GRB.CONTINUOUS, ub=kfa_max, name='kf_a') I have the constraint  for i,j in arcs:    model.addGenConstrLog(kfa[i,j], lkfa[i,j], n...

Thanks Eli.