Iason Liagkas

I want to model this constraint. δ is a binary index (parameter not variable) that takes 1/0 depending on the subscripts and superscripts. Can I create a function to emulate this index and multipl...

thanks Riley!

Thanks Mario!

for what set of variables do we have to make this definition? the ones that we use in the callback or every set of variables that is used in the model?  Kind regardsIason    

Mario, Do you know what does the line  m._vars = vars   in the TSP do? It is in the section Solve The Model.Kind regards

Thanks Mario, I was wondering if there are more examples with callbacks since I see that there are many ways that they can be applied and many functions. But it might not be needed since there are ...

Thanks Mario, Do you know other examples that use callbacks? Kind regards Iason

Thanks for the help Jonasz! I appreciate it!

thank you so much Marika!