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Cores, Joins and the Fano-Flow Conjectures

Ligang JinEckhard SteffenGiuseppe Mazzuoccolo — 2018

Discussiones Mathematicae Graph Theory

The Fan-Raspaud Conjecture states that every bridgeless cubic graph has three 1-factors with empty intersection. A weaker one than this conjecture is that every bridgeless cubic graph has two 1-factors and one join with empty intersection. Both of these two conjectures can be related to conjectures on Fano-flows. In this paper, we show that these two conjectures are equivalent to some statements on cores and weak cores of a bridgeless cubic graph. In particular, we prove that the Fan-Raspaud Conjecture...

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