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For questions related to the traveling salesman problem (TSP), which seeks, for a given set of nodes, the shortest path that visits every node and returns to the starting node.

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Travelling Salesman problem and Vehicle routing problems

Can someone explain to me why are we doing the $x_{ij}=1$ and and the constraint $U_j \geq u_i+1-n(1-x_{ij})$ Also do you have any books or sources in mind from where I could learn in more detail fro …
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