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Coefficientwise Extremality and Rigidity for Independent Sets in Bipartite Graph Covers

Watanabe, Yusuke
arXiv (All) · Papers
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05c1505c69combinatoricsdiscrete-mathematics
Let $G$ be a finite bipartite graph and let $\widetilde G$ be an $M$-fold cover. We compare independent sets of $\widetilde G$ with those of the trivial cover, consisting of $M$ disjoint copies of $G$, after prescribing how many vertices are selected above each vertex of $G$. A conjecture from 2011,
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