 links)</span>
<span class="comment">% and has an associated rate x_i. Each link j has an associated capacity</span>
<span class="comment">% c_j. The total rate of all flows travelling along a link cannot exceed</span>
<span class="comment">% the link capacity. We can describe these link capacity limits using the</span>
<span class="comment">% flow-link incidence matrix A \in \reals^{L \times n}, where</span>
<span class="comment">% A_{ij} = 1, if flow j passes through link i and 0 otherwise.</span>
<span c