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On a recolouring version of Hadwiger's conjecture
Journal of Combinatorial Theory Series B ( IF 1.4 ) Pub Date : 2023-10-30 , DOI: 10.1016/j.jctb.2023.10.001
Marthe Bonamy , Marc Heinrich , Clément Legrand-Duchesne , Jonathan Narboni

We prove that for any ε>0, for any large enough t, there is a graph that admits no Kt-minor but admits a (32ε)t-colouring that is “frozen” with respect to Kempe changes, i.e. any two colour classes induce a connected component. This disproves three conjectures of Las Vergnas and Meyniel from 1981.



中文翻译:

关于哈维格猜想的重新着色版本

我们证明对于任意ε>0,对于任何足够大的t,有一个图不允许Kt-次要但承认32-εt-相对于 Kempe 变化“冻结”的着色,即任何两个颜色类别都会产生一个连通分量。这反驳了 Las Vergnas 和 Meyniel 1981 年的三个猜想。

更新日期:2023-10-30
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