On the area requirements of Euclidean minimum spanning trees

  • Authors:
  • Patrizio Angelini;Till Bruckdorfer;Marco Chiesa;Fabrizio Frati;Michael Kaufmann;Claudio Squarcella

  • Affiliations:
  • Dipartimento di Informatica e Automazione, Universití Roma Tre, Italy;Wilhelm-Schickard-Institut für Informatik, Universität Tübingen, Germany;Dipartimento di Informatica e Automazione, Universití Roma Tre, Italy;School of Information Technologies, The University of Sydney, Australia;Wilhelm-Schickard-Institut für Informatik, Universität Tübingen, Germany;Dipartimento di Informatica e Automazione, Universití Roma Tre, Italy

  • Venue:
  • Computational Geometry: Theory and Applications
  • Year:
  • 2014

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Abstract

In their seminal paper on Euclidean minimum spanning trees, Monma and Suri (1992) proved that any tree of maximum degree 5 admits a planar embedding as a Euclidean minimum spanning tree. Their algorithm constructs embeddings with exponential area; however, the authors conjectured that there exist n-vertex trees of maximum degree 5 that require c^nxc^n area to be embedded as Euclidean minimum spanning trees, for some constant c1. In this paper, we prove the first exponential lower bound on the area requirements for embedding trees as Euclidean minimum spanning trees.