Universitat Politècnica de Catalunya
Departamento de Matemáticas, Universidad Autónoma Metropolitana-Iztapalapa
2017 Volume 25 Pages 537-541
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Let Π be a convex decomposition of a set P of n ≥ 3 points in general position in the plane. If Π consists of more than one polygon, then either Π contains a deletable edge or Π contains a contractible edge.
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