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» A note on antisymmetric flows in graphs
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EJC
2010
13 years 5 months ago
A note on antisymmetric flows in graphs
We prove that any orientation of a graph without bridges and directed 2-edge-cuts admits a Z3 2
Zdenek Dvorak, Tomás Kaiser, Daniel Kr&aacu...
MST
2006
99views more  MST 2006»
13 years 4 months ago
Complexity of the Exact Domatic Number Problem and of the Exact Conveyor Flow Shop Problem
We prove that the exact versions of the domatic number problem are complete for the levels of the boolean hierarchy over NP. The domatic number problem, which arises in the area of...
Tobias Riege, Jörg Rothe
CORR
2008
Springer
141views Education» more  CORR 2008»
13 years 5 months ago
Truthful Unsplittable Flow for Large Capacity Networks
The unsplittable flow problem is one of the most extensively studied optimization problems in the field of networking. An instance of it consists of an edge capacitated graph and ...
Yossi Azar, Iftah Gamzu, Shai Gutner
ECCC
2007
147views more  ECCC 2007»
13 years 4 months ago
Inapproximability of edge-disjoint paths and low congestion routing on undirected graphs
In the undirected Edge-Disjoint Paths problem with Congestion (EDPwC), we are given an undirected graph with V nodes, a set of terminal pairs and an integer c. The objective is to...
Matthew Andrews, Julia Chuzhoy, Venkatesan Guruswa...