A Linear-Time Approximation Scheme for TSP in Undirected Planar Graphs with Edge-Weights

  title={A Linear-Time Approximation Scheme for TSP in Undirected Planar Graphs with Edge-Weights},
  author={Philip N. Klein},
  journal={SIAM J. Comput.},
We give an algorithm requiringO(c1/ǫ 2 n) time to find anǫ-optimal traveling salesman tour in the shortest-path metric defined by an undirected pla nar graph with nonnegative edgelengths. For the case of all lengths equal to 1, the time requi d isO(c1/ǫn). 
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