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Chen and Chvátal introduced the notion of lines in hypergraphs; they proved that every 3-uniform hypergraph with n vertices either has a line that consists of all n vertices or else has at least log2n distinct lines. We improve this lower bound by a factor of 2−o(1).
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.