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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»
14 years 11 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»
15 years 5 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
15 years 4 months ago
An Improved Approximation Algorithm for Vertex Cover with Hard Capacities
Rajiv Gandhi, Eran Halperin, Samir Khuller, Guy Ko...
FOCS
2002
IEEE
15 years 4 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
SPIN
2004
Springer
15 years 5 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