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Showing 2020 · math.COShow all
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math.CO2020
Intersecting and -intersecting hypergraphs with maximal covering number: the Erdős-Lovász theme revisited
János Barát
Erdős and Lovász noticed that an -uniform intersecting hypergraph with maximal covering number, that is , must have at least edges. There has been n…
math.CO2020
Matchings in regular graphs: minimizing the partition function
Márton Borbényi, Péter Csikvári
For a graph on vertices let denote the number of matchings of size , and consider the partition function . In this paper we s…