A balanced non-partitionable Cohen–Macaulay complex

A balanced non-partitionable Cohen–Macaulay complex
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DOI:
10.5802/alco.78
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发表时间:
2017-11
影响因子:
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通讯作者:
Martina Juhnke-Kubitzke;Lorenzo Venturello
Martina Juhnke-Kubitzke;Lorenzo Venturello
中科院分区:
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文献类型:
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作者:
Martina Juhnke-Kubitzke;Lorenzo Venturello

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在最近的一篇论文中,Duval、Goeckner、Klivans和Martin反驳了Stanley长期以来的猜想,即每个Cohen-Macaulay单纯复形都是可分的。我们构造了这个猜想的反例,它们是偶\n {平衡}的,即,它们的基础图具有最小着色。这回答了Duval等人的一个问题。
In a recent paper, Duval, Goeckner, Klivans and Martin disproved the longstanding conjecture by Stanley, that every Cohen-Macaulay simplicial complex is partitionable. We construct counterexamples to this conjecture that are even \emph{balanced}, i.e., their underlying graph has a minimal coloring. This answers a question by Duval et al. in the negative.