Sciweavers

82 search results - page 6 / 17
» No four subsets forming an N
Sort
View
ALGORITHMICA
2006
109views more  ALGORITHMICA 2006»
14 years 11 months ago
Computing All Immobilizing Grasps of a Simple Polygon with Few Contacts
: We study the output-sensitive computations of all the combinations of the edges and vertices of a simple polygon P that allow a form closure grasp with less than four point conta...
Jae-Sook Cheong, Herman J. Haverkort, A. Frank van...
FOCS
2006
IEEE
15 years 5 months ago
Explicit Exclusive Set Systems with Applications to Broadcast Encryption
A family of subsets C of [n] def = {1, . . . , n} is (r, t)exclusive if for every S ⊂ [n] of size at least n − r, there exist S1, . . . , St ∈ C with S = S1∪S2∪· · · ...
Craig Gentry, Zulfikar Ramzan, David P. Woodruff
JCO
2007
128views more  JCO 2007»
14 years 11 months ago
Approximation algorithms and hardness results for labeled connectivity problems
Let G = (V, E) be a connected multigraph, whose edges are associated with labels specified by an integer-valued function L : E → N. In addition, each label ℓ ∈ N has a non-...
Refael Hassin, Jérôme Monnot, Danny S...
APLAS
2005
ACM
15 years 29 days ago
Loop Invariants on Demand
This paper describes a sound technique that combines the precision em proving with the loop-invariant inference of abstract interpretation. The loop-invariant computations are invo...
K. Rustan M. Leino, Francesco Logozzo
ASAP
2004
IEEE
160views Hardware» more  ASAP 2004»
15 years 2 months ago
Architectural Support for Arithmetic in Optimal Extension Fields
Public-key cryptosystems generally involve computation-intensive arithmetic operations, making them impractical for software implementation on constrained devices such as smart ca...
Johann Großschädl, Sandeep S. Kumar, Ch...