New answers tagged traveling-salesman
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I would like to add an answer by @Misha Lavrov:
The MTZ constraints really need to know the direction of an edge in order to work. I have called them "timing constraints" when teaching, because they are an inequality representation of the condition
If $x_{ij} = 1$ (if we go from vertex $i$ to vertex $j$) then $t_j$ (the MTZ variable that ...
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