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» Problems and results in extremal combinatorics - II
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CPAIOR
2010
Springer
15 years 2 months ago
A Constraint Integer Programming Approach for Resource-Constrained Project Scheduling
Abstract. We propose a hybrid approach for solving the resource-constrained project scheduling problem which is an extremely hard to solve combinatorial optimization problem of pra...
Timo Berthold, Stefan Heinz, Marco E. Lübbeck...
COMPGEOM
2010
ACM
15 years 2 months ago
Incidences in three dimensions and distinct distances in the plane
d Abstract] György Elekes Eötvös University Micha Sharir Tel Aviv University and New York University We first describe a reduction from the problem of lower-bounding the numbe...
György Elekes, Micha Sharir
MP
2006
142views more  MP 2006»
14 years 9 months ago
Exploring the Relationship Between Max-Cut and Stable Set Relaxations
The max-cut and stable set problems are two fundamental NP-hard problems in combinatorial optimization. It has been known for a long time that any instance of the stable set probl...
Monia Giandomenico, Adam N. Letchford
CJTCS
1999
133views more  CJTCS 1999»
14 years 9 months ago
The Permanent Requires Large Uniform Threshold Circuits
We show that thepermanent cannot be computed by uniform constantdepth threshold circuits of size Tn, for any function T such that for all k, Tk n = o2n. More generally, we show th...
Eric Allender
CALC
2001
Springer
171views Cryptology» more  CALC 2001»
15 years 2 months ago
Approximate Integer Common Divisors
We show that recent results of Coppersmith, Boneh, Durfee and Howgrave-Graham actually apply in the more general setting of (partially) approximate common divisors. This leads us t...
Nick Howgrave-Graham