Book ChapterDOI
Allowable Sequences and Order Types in Discrete and Computational Geometry
Jacob E. Goodman,Richard Pollack +1 more
- pp 103-134
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TLDR
The allowable sequence associated to a configuration of points was first developed by the authors in order to investigate what combinatorial structure lay behind the Erdős-Szekeres conjecture (that any 2 n-2 + 1 points in general position in the plane contain among them n points which are in convex position) as mentioned in this paper.Abstract:
The allowable sequence associated to a configuration of points was first developed by the authors in order to investigate what combinatorial structure lay behind the Erdős-Szekeres conjecture (that any 2 n-2 + 1 points in general position in the plane contain among them n points which are in convex position) Though allowable sequences did not lead to any progress on this ancient problem, there did emerge an object that had considerable intrinsic interest, that turned out to be related to some other well-studied structures such as pseudoline arrangements and oriented matroids, and that had as well a combinatorial simplicity and suggestiveness which turned out to be effective in the solution of several other classical problems These connections and applications are discussed in Sections 2, 3, and 4 of this paperread more
Citations
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Journal ArticleDOI
Qualitative Spatial Representation and Reasoning: An Overview
TL;DR: The paper is a overview of the major qualitative spatial representation and reasoning techniques including ontological aspects, topology, distance, orientation and shape, and qualitative spatial reasoning including reasoning about spatial change.
Journal ArticleDOI
Parametrizations of Canonical Bases and Totally Positive Matrices
Book ChapterDOI
Arrangements and Their Applications
Pankaj K. Agarwal,Micha Sharir +1 more
TL;DR: This chapter surveys combinatorial and algorithmic properties of arrangements of arcs in the plane and of surface patches in higher dimensions and presents many applications of arrangements to problems in motion planning, visualization, range searching, molecular modeling, and geometric optimization.
Book ChapterDOI
Qualitative Spatial Representation and Reasoning Techniques
TL;DR: The state of the art in Qualitative Spatial Reasoning is surveyed, covering representation and reasoning issues as well as pointing to some application areas.
Proceedings ArticleDOI
A combinatorial approach to planar non-colliding robot arm motion planning
TL;DR: A combinatorial approach to plan noncolliding motions for a polygonal bar-and-joint framework based on a novel class of one-degree-of-freedom mechanisms induced by pseudo triangulations of planar point sets that yields very efficient deterministic algorithms for a category of robot arm motion planning problems with many degrees of freedom.
References
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Book
Computers and Intractability: A Guide to the Theory of NP-Completeness
TL;DR: The second edition of a quarterly column as discussed by the authors provides a continuing update to the list of problems (NP-complete and harder) presented by M. R. Garey and myself in our book "Computers and Intractability: A Guide to the Theory of NP-Completeness,” W. H. Freeman & Co., San Francisco, 1979.
Book
Algorithms in Combinatorial Geometry
TL;DR: This book offers a modern approach to computational geo- metry, an area thatstudies the computational complexity of geometric problems with an important role in this study.
Journal ArticleDOI
The maximum numbers of faces of a convex polytope
TL;DR: For convex polytopes, the maximum possible number of faces of a d-polytope with v vertices is achieved by a cyclic polytope C(v, d) as discussed by the authors.