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## Dipolar  We want to do a process similar to above with all pair of points. In order to do so, we need an efficient way of calculating the diameter of a MST given poles \(i,j\). \(i,j\), which we refer to as \(T_{ij}\).  Let \(P_i, P_j\) be the points connected to \(i,j\) respectively in \(T_{ij}\). The diameter of the MST \(d(T_{ij}) = \max_{P_i} |i\ p_i| + \max_{P_j} |j\ p_j| + |ij|\)