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» Proof and Computation in Geometry
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FCT
2003
Springer
15 years 11 months ago
On Boundaries of Highly Visible Spaces and Applications
The purpose of this paper is to investigate the properties of a certain class of highly visible spaces. For a given geometric space C containing obstacles specified by disjoint s...
John H. Reif, Zheng Sun
JUCS
2010
117views more  JUCS 2010»
15 years 5 months ago
NP-completeness and FPT Results for Rectilinear Covering Problems
Abstract: This paper discusses three rectilinear (that is, axis-parallel) covering problems in d dimensions and their variants. The first problem is the Rectilinear Line Cover whe...
Vladimir Estivill-Castro, Apichat Heednacram, Fran...
3DOR
2008
15 years 9 months ago
Characterizing Shape Using Conformal Factors
We present a new 3D shape descriptor based on conformal geometry. Our descriptor is invariant under non-rigid quasi-isometric transformations, such as pose changes of articulated ...
Mirela Ben-Chen, Craig Gotsman
FCT
2007
Springer
16 years 23 days ago
On Block-Wise Symmetric Signatures for Matchgates
We give a classification of block-wise symmetric signatures in the theory of matchgate computations. The main proof technique is matchgate identities, a.k.a. useful Grassmann-Pl¨...
Jin-yi Cai, Pinyan Lu
RTA
2004
Springer
15 years 12 months ago
Dependency Pairs Revisited
Abstract. In this paper we present some new refinements of the dependency pair method for automatically proving the termination of term rewrite systems. These refinements are ver...
Nao Hirokawa, Aart Middeldorp