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Bend-Bounded Path Intersection Graphs - Sausages, Noodles, and Waffles on a Grill

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Abstract

In this paper we study properties of intersection graphs of k-bend paths in the rectangular grid. A k-bend path is a path with at most k 90 degree turns. The class of graphs representable by intersections of k-bend paths is denoted by B k -VPG. We show here that for every fixed k, B k -VPG B k∈+∈1-VPG and that recognition of graphs from B k -VPG is NP-complete even when the input graph is given by a B k∈+∈1-VPG representation. We also show that the class B k -VPG (for k∈≥∈1) is in no inclusion relation with the class of intersection graphs of straight line segments in the plane.

Original languageEnglish
Title of host publicationGraph-Theoretic Concepts in Computer Science - 38th International Workshop, WG 2012, Revised Selcted Papers
EditorsM.C. Golumbic, M. Stern, A. Levy, G. Morgenstern
PublisherSpringer, Berlin, Heidelberg
Pages274-285
Number of pages12
ISBN (Electronic)9783642346118
ISBN (Print)9783642346101
DOIs
Publication statusPublished - 2012
Externally publishedYes

Publication series

SeriesLecture Notes in Computer Science
Volume7551
ISSN0302-9743

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