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On a recolouring version of Hadwiger's conjecture
Journal of Combinatorial Theory Series B ( IF 1.2 ) Pub Date : 2023-10-30 , DOI: 10.1016/j.jctb.2023.10.001 Marthe Bonamy , Marc Heinrich , Clément Legrand-Duchesne , Jonathan Narboni
中文翻译:
关于哈维格猜想的重新着色版本
更新日期:2023-10-30
Journal of Combinatorial Theory Series B ( IF 1.2 ) 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 , for any large enough t, there is a graph that admits no -minor but admits a -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,对于任何足够大的t,有一个图不允许-次要但承认-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。