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For most diseases, it is always better to medically intervene earlier compared to later. This is because treatment at an early stage is generally more effective, and less expensive. The same is probably true for economies and financial markets. In the current global financial crisis, we have seen bi ...

Let ▫$P$▫ be a set of at most ▫$n$▫ points and let ▫$R$▫ be a set of at most ▫$n$▫ geometric ranges, such as disks or rectangles, where each ▫$p \in P$▫ has an associated supply ▫$s_{p} > 0$▫, and each ▫$r \in R$▫ has an associated demand ▫$d_{r} > 0$▫. A (many-to-many) matching is a set ▫${\mathcal ...