Optimal location problems with routing cost

In the paper a model problem for the location of a given number $N$ of points in a given region $Ω$ and with a given resources density $ρ(x)$ is considered. The main difference between the usual location problems and the present one is that in addition to the location cost an extra {\it routing cost} is considered, that takes into account the fact that the resources have to travel between the locations on a point-to-point basis. The limit problem as $N\to\infty$ is characterized and some applications to airfreight systems are shown.

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