
doi: 10.1137/0132019
It is shown that the “shortest” directed Hamiltonian tour in a graph G with metrically realizable distances has the property that between any vertex and its nearest neighbor in that tour there must be a vertex $v_0 $ from which the succeeding arc in the tour is no more than twice as long as the shortest arc from $v_0 $ in G Some related results and conjectures are described.
Extremal problems in graph theory, Integer programming
Extremal problems in graph theory, Integer programming
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