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STOC
2005
ACM
135views Algorithms» more  STOC 2005»
14 years 11 months ago
Quadratic forms on graphs
We introduce a new graph parameter, called the Grothendieck constant of a graph G = (V, E), which is defined as the least constant K such that for every A : E R, sup f:V S|V |-1 ...
Noga Alon, Konstantin Makarychev, Yury Makarychev,...
WADS
2009
Springer
281views Algorithms» more  WADS 2009»
14 years 5 months ago
The Simultaneous Representation Problem for Chordal, Comparability and Permutation Graphs
Abstract. We introduce the simultaneous representation problem, defined for any graph class C characterized in terms of representations, e.g. any class of intersection graphs. Two...
Krishnam Raju Jampani, Anna Lubiw
CRYPTO
2007
Springer
133views Cryptology» more  CRYPTO 2007»
14 years 4 months ago
On Secure Multi-party Computation in Black-Box Groups
Abstract. We study the natural problem of secure n-party computation (in the passive, computationally unbounded attack model) of the n-product function fG(x1, . . . , xn) = x1 · x...
Yvo Desmedt, Josef Pieprzyk, Ron Steinfeld, Huaxio...
WADS
2007
Springer
180views Algorithms» more  WADS 2007»
14 years 4 months ago
Spanners for Geometric Intersection Graphs
A ball graph is an intersection graph of a set of balls with arbitrary radii. Given a real number t > 1, we say that a subgraph G′ of a graph G is a t-spanner of G, if for eve...
Martin Fürer, Shiva Prasad Kasiviswanathan
TIFS
2010
97views more  TIFS 2010»
13 years 9 months ago
On the location of an eavesdropper in multiterminal networks
—We study the optimum location of an eavesdropper from a secrecy capacity perspective in multiterminal networks with power control. We determine the logical location of an eavesd...
S. Anand, R. Chandramouli