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نویسنده
چکیده
dx is a negative type metric Here, dx(i, j) is the distance of the shortest i-j path using x(e) as the length of edge e. Last time we proved that this is indeed a relaxation of the problem; in that proof, we could have replaced the inequality with ∑ i,j dx(i, j) = 1, and this time it will be useful to do so. Last time, we also showed a connection between this relaxation and λ2(LF ) where LF is the weighted Laplacian with weights equal to the flows of a flow packing. For what follows, let us scale x up by n2 and the objective value down by n2: 1 n2 min ∑
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