English

Perfect k-colored matchings and (k+2)-gonal tilings

Combinatorics 2018-07-16 v2

Abstract

We derive a simple bijection between geometric plane perfect matchings on 2n2n points in convex position and triangulations on n+2n+2 points in convex position. We then extend this bijection to monochromatic plane perfect matchings on periodically kk-colored vertices and (k+2)(k+2)-gonal tilings of convex point sets. These structures are related to a generalization of Temperley-Lieb algebras and our bijections provide explicit one-to-one relations between matchings and tilings. Moreover, for a given element of one class, the corresponding element of the other class can be computed in linear time.

Keywords

Cite

@article{arxiv.1710.06757,
  title  = {Perfect k-colored matchings and (k+2)-gonal tilings},
  author = {Oswin Aichholzer and Lukas Andritsch and Karin Baur and Birgit Vogtenhuber},
  journal= {arXiv preprint arXiv:1710.06757},
  year   = {2018}
}

Comments

12 pages, 8 figures