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Summary: Triangulations Match Intersect Nicely
Oswin Aichholzer
Franz Aurenhammer
Michael Taschwer
Institute for Theoretical Computer Science
Graz University of Technology
Klosterwiesgasse 32/2, A8010 Graz, Austria
email: foaich,aureng@igi.tugraz.ac.at
G¨ unter Rote
Institut f¨ ur Mathematik
Technische Universit¨ at Graz
Steyrergasse 30
A8010 Graz, Austria
email: rote@ftug.dnet.tugraz.ac.at
Abstract
We prove that two different triangulations of the
same planar point set always intersect in a sys
tematic manner, concerning both their edges and
their triangles. As a consequence, improved lower
bounds on the weight of a triangulation are ob
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