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A note on the Survivable Network Design Problem

In this note we consider the survivable network design problem (SNDP) in undirected graphs. We make two contributions. The first is a new counting argument in the iterated rounding based 2-approximation for edge-connectivity SNDP (EC-SNDP) originally due to Jain. The second is to make some additional connections between hypergraphic version of SNDP introduced by Zhao, Nagamochi and Ibaraki and edge and node-weighted versions of EC-SNDP and element-connectivity SNDP (Elem-SNDP). One useful consequence of this connection is a 2-approximation for Elem-SNDP that avoids the use of set-pair based relaxation and analysis.

preprint2016arXivOpen access
Chandra ChekuriThapanapong Rukkanchanunt
Data Structures and Algorithms
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Open access2 authors1 topic
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Chandra ChekuriThapanapong Rukkanchanunt

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