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FSTTCS
2010
Springer
13 years 6 months ago
Determining the Winner of a Dodgson Election is Hard
Computing the Dodgson Score of a candidate in an election is a hard computational problem, which has been analyzed using classical and parameterized analysis. In this paper we reso...
Michael R. Fellows, Bart M. P. Jansen, Daniel Loks...
FOCS
2002
IEEE
14 years 1 months ago
Zero-Knowledge
We show new lower bounds and impossibility results for general (possibly non-black-box) zero-knowledge proofs and arguments. Our main results are that, under reasonable complexity...
Oded Goldreich
ESA
2009
Springer
129views Algorithms» more  ESA 2009»
14 years 3 months ago
Constant Ratio Fixed-Parameter Approximation of the Edge Multicut Problem
Abstract. The input of the Edge Multicut problem consists of an undirected graph G and pairs of terminals {s1, t1}, . . . , {sm, tm}; the task is to remove a minimum set of edges s...
Dániel Marx, Igor Razgon
CORR
2010
Springer
89views Education» more  CORR 2010»
13 years 8 months ago
An Oracle Strongly Separating Deterministic Time from Nondeterministic Time, via Kolmogorov Complexity
Hartmanis used Kolmogorov complexity to provide an alternate proof of the classical result of Baker, Gill, and Solovay that there is an oracle relative to which P is not NP. We re...
David Doty
COMBINATORICS
2002
107views more  COMBINATORICS 2002»
13 years 8 months ago
Combinatorial Laplacian of the Matching Complex
A striking result of Bouc gives the decomposition of the representation of the symmetric group on the homology of the matching complex into irreducibles that are self-conjugate. We...
Xun Dong, Michelle L. Wachs