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» Rectangle Covers Revisited Computationally
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COMPGEOM
2004
ACM
14 years 4 months ago
New results on shortest paths in three dimensions
We revisit the problem of computing shortest obstacle-avoiding paths among obstacles in three dimensions. We prove new hardness results, showing, e.g., that computing Euclidean sh...
Joseph S. B. Mitchell, Micha Sharir
ENTCS
2002
80views more  ENTCS 2002»
13 years 10 months ago
Monotonic Extensions of Petri Nets: Forward and Backward Search Revisited
In this paper, we revisit the forward and backward approaches to the verification of extensions of infinite state Petri Nets. As contributions, we propose an efficient data struct...
Alain Finkel, Jean-François Raskin, Mathias...
ARCS
2006
Springer
14 years 2 months ago
Safety, Liveness, and Information Flow: Dependability Revisited
Abstract: We present a formal framework to talk and reason about dependable systems. The framework is based on three distinct classes of (system specification) properties we call s...
Zinaida Benenson, Felix C. Freiling, Thorsten Holz...
FOSSACS
2009
Springer
14 years 5 months ago
Facets of Synthesis: Revisiting Church's Problem
In this essay we discuss the origin, central results, and some perspectives of algorithmic synthesis of nonterminating reactive programs. We recall the fundamental questions raised...
Wolfgang Thomas
DCC
2007
IEEE
14 years 10 months ago
Low-density attack revisited
The low-density attack proposed by Lagarias and Odlyzko is a powerful algorithm against the subset sum problem. The improvement algorithm due to Coster et al. would solve almost a...
Tetsuya Izu, Jun Kogure, Takeshi Koshiba, Takeshi ...