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Showing 2016 · math.COShow all
2 papers · 2 filters
math.CO2016
Covering a cubic graph by 5 perfect matchings
Wuyang Sun
Berge Conjecture states that every bridgeless cubic graph has 5 perfect matchings such that each edge is contained in at least one of them. In this paper, we show that Berge Conjec…
math.CO2016★ 1 cited
On recognising frame and lifted-graphic matroids
Rong Chen, Geoff Whittle
We prove that there is no polynomial with the property that a matroid can be determined to be either a lifted-graphic or frame matroid using at most rank ev…