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FSTTCS
2004
Springer
14 years 1 months ago
Refinement and Separation Contexts
A separation context is a client program which does not dereference internals of a module with which it interacts. We use certain "precise" relations to unambiguously des...
Ivana Mijajlovic, Noah Torp-Smith, Peter W. O'Hear...
FOCS
1991
IEEE
14 years 1 months ago
Lower Bounds for the Complexity of Reliable Boolean Circuits with Noisy Gates
We prove that the reliable computation of any Boolean function with sensitivity s requires Ω(s log s) gates if the gates of the circuit fail independently with a fixed positive...
Anna Gál
ECCC
2008
79views more  ECCC 2008»
13 years 10 months ago
Valiant-Vazirani Lemmata for Various Logics
We show analogues of a theorem due to Valiant and Vazirani [16] for intractable parameterized complexity classes such as W[P], W[SAT] and the classes of the W-hierarchy as well as...
Moritz Müller
CORR
2006
Springer
134views Education» more  CORR 2006»
13 years 10 months ago
Max-Cut and Max-Bisection are NP-hard on unit disk graphs
We prove that the max-cut and max-bisection problems are NP-hard on unit disk graphs. We also show that -precision graphs are planar for > 1/ 2 and give a dichotomy theorem f...
Josep Díaz, Marcin Kaminski
DM
2006
54views more  DM 2006»
13 years 10 months ago
A note on interconnecting matchings in graphs
We prove a sufficient condition for a graph G to have a matching that interconnects all the components of a disconnected spanning subgraph of G. The condition is derived from a re...
Tomás Kaiser