Extended Formulations for Stable Set Polytopes of Graphs Without Two Disjoint Odd Cycles

11/27/2019
by   Michele Conforti, et al.
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Let G be an n-node graph without two disjoint odd cycles. The algorithm of Artmann, Weismantel and Zenklusen (STOC'17) for bimodular integer programs can be used to find a maximum weight stable set in G in strongly polynomial time. Building on structural results characterizing sufficiently connected graphs without two disjoint odd cycles, we construct a size-O(n^2) extended formulation for the stable set polytope of G.

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