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FUN
2007
Springer
78views Algorithms» more  FUN 2007»
15 years 3 months ago
Wooden Geometric Puzzles: Design and Hardness Proofs
We discuss some new geometric puzzles and the complexity of their extension to arbitrary sizes. For gate puzzles and two-layer puzzles we prove NP-completeness of solving them. No...
Helmut Alt, Hans L. Bodlaender, Marc J. van Krevel...
COMBINATORICS
1998
102views more  COMBINATORICS 1998»
14 years 9 months ago
Inclusion-Exclusion and Network Reliability
Based on a recent improvement of the inclusion-exclusion principle, we present a new approach to network reliability problems. In particular, we give a new proof of a result of Sh...
Klaus Dohmen
STOC
2003
ACM
109views Algorithms» more  STOC 2003»
15 years 3 months ago
A new multilayered PCP and the hardness of hypergraph vertex cover
Given a k-uniform hypergraph, the Ek-Vertex-Cover problem is to find the smallest subset of vertices that intersects every hyperedge. We present a new multilayered PCP constructi...
Irit Dinur, Venkatesan Guruswami, Subhash Khot, Od...
CORR
2009
Springer
114views Education» more  CORR 2009»
14 years 7 months ago
Distributed Branching Bisimulation Minimization by Inductive Signatures
We present a new distributed algorithm for state space minimization modulo branching bisimulation. Like its predecessor it uses signatures for refinement, but the refinement proce...
Stefan Blom, Jaco van de Pol
ITP
2010
178views Mathematics» more  ITP 2010»
14 years 11 months ago
Interactive Termination Proofs Using Termination Cores
Recent advances in termination analysis have yielded new methods and tools that are highly automatic. However, when they fail, even experts have difficulty understanding why and de...
Panagiotis Manolios, Daron Vroon