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» Hardness assumptions in the foundations of theoretical compu...
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CC
2007
Springer
121views System Software» more  CC 2007»
13 years 7 months ago
If NP Languages are Hard on the Worst-Case, Then it is Easy to Find Their Hard Instances
We prove that if NP ⊆ BPP, i.e., if SAT is worst-case hard, then for every probabilistic polynomial-time algorithm trying to decide SAT, there exists some polynomially samplable ...
Dan Gutfreund, Ronen Shaltiel, Amnon Ta-Shma
COCO
2005
Springer
123views Algorithms» more  COCO 2005»
14 years 1 months ago
If NP Languages are Hard on the Worst-Case Then It is Easy to Find Their Hard Instances
We prove that if NP ⊆ BPP, i.e., if SAT is worst-case hard, then for every probabilistic polynomial-time algorithm trying to decide SAT, there exists some polynomially samplable ...
Dan Gutfreund, Ronen Shaltiel, Amnon Ta-Shma
ICALP
2003
Springer
14 years 26 days ago
An Improved Approximation Algorithm for Vertex Cover with Hard Capacities
Rajiv Gandhi, Eran Halperin, Samir Khuller, Guy Ko...
FOCS
2002
IEEE
14 years 19 days 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
SPIN
2004
Springer
14 years 1 months ago
Formal Analysis of Processor Timing Models
Hard real-time systems need methods to determine upper bounds for their execution times, usually called worst-case execution
Reinhard Wilhelm