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The Dichotomy of Minimum Cost Homomorphism Problems for Digraphs

✍ Scribed by Hell, Pavol; Rafiey, Arash


Book ID
118197860
Publisher
Society for Industrial and Applied Mathematics
Year
2012
Tongue
English
Weight
208 KB
Volume
26
Category
Article
ISSN
0895-4801

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We consider the problem (minimum spanning strong subdigraph (MSSS)) of finding the minimum number of arcs in a spanning strongly connected subdigraph of a strongly connected digraph. This problem is NP-hard for general digraphs since it generalizes the Hamiltonian cycle problem. We characterize the