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SIAMCOMP
2011
12 years 10 months ago
Inapproximability Results for Maximum Edge Biclique, Minimum Linear Arrangement, and Sparsest Cut
We consider the Minimum Linear Arrangement problem and the (Uniform) Sparsest Cut problem. So far, these two notorious NP-hard graph problems have resisted all attempts to prove in...
Christoph Ambühl, Monaldo Mastrolilli, Ola Sv...
ICALP
1999
Springer
14 years 4 hour ago
Average-Case Complexity of Shellsort
We demonstrate an ⍀( pn1ϩ1/p) lower bound on the average-case running time (uniform distribution) of p-pass Shellsort. This is the first nontrivial general lower bound for avera...
Tao Jiang, Ming Li, Paul M. B. Vitányi
CONCUR
1998
Springer
13 years 12 months ago
Automata and Coinduction (An Exercise in Coalgebra)
The classical theory of deterministic automata is presented in terms of the notions of homomorphism and bisimulation, which are the cornerstones of the theory of universal coalgebr...
Jan J. M. M. Rutten
OOGRAPHICS
1994
13 years 11 months ago
An Object-Oriented Approach to Curves and Surfaces
class of general differentiable curves and surfaces and in turn refine this design to various parametric representations of curves and surfaces. This design includes all of the sta...
Philipp Slusallek, Reinhard Klein, Andreas Kolb, G...
ICALP
2000
Springer
13 years 11 months ago
Algebraic Models for Contextual Nets
Abstract. We extend the algebraic approach of Meseguer and Montanari from ordinary place/transition Petri nets to contextual nets, covering both the collective and the individual t...
Roberto Bruni, Vladimiro Sassone