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» A Tight Karp-Lipton Collapse Result in Bounded Arithmetic
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CSL
2008
Springer
13 years 6 months ago
A Tight Karp-Lipton Collapse Result in Bounded Arithmetic
Olaf Beyersdorff, Sebastian Müller
LATA
2009
Springer
13 years 11 months ago
Nondeterministic Instance Complexity and Proof Systems with Advice
Abstract. Motivated by strong Karp-Lipton collapse results in bounded arithmetic, Cook and Kraj´ıˇcek [7] have recently introduced the notion of propositional proof systems with...
Olaf Beyersdorff, Johannes Köbler, Sebastian ...
FSTTCS
2010
Springer
13 years 2 months ago
The Complexity of Model Checking (Collapsible) Higher-Order Pushdown Systems
We study (collapsible) higher-order pushdown systems -- theoretically robust and well-studied models of higher-order programs -- along with their natural subclass called (collapsi...
Matthew Hague, Anthony Widjaja To
COCO
2004
Springer
119views Algorithms» more  COCO 2004»
13 years 8 months ago
Tight Lower Bounds for Certain Parameterized NP-Hard Problems
Based on the framework of parameterized complexity theory, we derive tight lower bounds on the computational complexity for a number of well-known NP-hard problems. We start by pr...
Jianer Chen, Benny Chor, Mike Fellows, Xiuzhen Hua...
STOC
2010
ACM
224views Algorithms» more  STOC 2010»
13 years 9 months ago
Satisfiability Allows No Nontrivial Sparsification Unless The Polynomial-Time Hierarchy Collapses
Consider the following two-player communication process to decide a language L: The first player holds the entire input x but is polynomially bounded; the second player is computa...
Holger Dell and Dieter van Melkebeek