Sciweavers

83 search results - page 6 / 17
» Hardness Amplification in Proof Complexity
Sort
View
FOCS
2008
IEEE
14 years 2 months ago
On the Hardness of Being Truthful
The central problem in computational mechanism design is the tension between incentive compatibility and computational ef ciency. We establish the rst significant approximability ...
Christos H. Papadimitriou, Michael Schapira, Yaron...
COMPGEOM
2010
ACM
14 years 21 days ago
Adding one edge to planar graphs makes crossing number hard
A graph is near-planar if it can be obtained from a planar graph by adding an edge. We show that it is NP-hard to compute the crossing number of near-planar graphs. The main idea ...
Sergio Cabello, Bojan Mohar
STOC
1994
ACM
123views Algorithms» more  STOC 1994»
13 years 11 months ago
Natural proofs
Razborov and Rudich have shown that so-called natural proofs are not useful for separating P from NP unless hard pseudorandomnumber generators do not exist. This famous result is ...
Alexander A. Razborov, Steven Rudich
COCOON
2000
Springer
13 years 12 months ago
Parameterized Complexity of Finding Subgraphs with Hereditary Properties
We consider the parameterized complexity of the following problem under the framework introduced by Downey and Fellows[4]: Given a graph G, an integer parameter k and a non-trivial...
Subhash Khot, Venkatesh Raman
COCO
1994
Springer
140views Algorithms» more  COCO 1994»
13 years 11 months ago
Random Debaters and the Hardness of Approximating Stochastic Functions
A probabilistically checkable debate system (PCDS) for a language L consists of a probabilisticpolynomial-time veri er V and a debate between Player 1, who claims that the input x ...
Anne Condon, Joan Feigenbaum, Carsten Lund, Peter ...