TeX source:

\min \left\{\sum_{k} \sum_{r} \sum_{(i, j) \in A} \mathrm{ds}_{i, j} X_{k, r, i, j} T C_{k}+\sum_{k} \sum_{r} \sum_{p} \sum_{\{(i, j) e A} X T_{k, i, j, p} \mathrm{ds}_{i, j} L C_{k, p}+\sum_{k} \sum_{r} \sum_{i}\left(P l W l_{k, r, i}+P u W u_{k, r, i}\right)\right\}