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Orientation conjecture for mixed hypergraphs with supermodular and submodular bounds
About 2 years old
Mixed-hypergraph orientation conjecture. There exists an orientation $\overrightarrow{\mathcal{E}}$ of $\mathcal{E}$ such that
openhypergraph-orientations mixed-hypergraphs submodularity
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Orientation conjecture for mixed hypergraphs with supermodular and submodular bounds