On the mixing rate of the triangulation walk

نویسندگان

  • Michael Molloy
  • Bruce A. Reed
  • William Steiger
چکیده

Let Tn denote the set of triangulations of a convex polygon K with n sides We study the random walk on Tn whose transitions are ips of one of the n internal diagonals of the current triangulation the choice of diagonal being random By bounding the conductance of this graph we show that the walk mixes rapidly namely in time O n A direct argument is given for the fact that the mixing rate is at least n Introduction and Summary Consider a convex polygon K on n points p pn in clockwise order A triangulation is a set of n non crossing diagonals pipj which partitions K into n triangles It is familiar see e g that Tn the set of all triangulations of K satis es

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تاریخ انتشار 1997