
doi: 10.46298/dmtcs.3060
In this article we prove that the poset of m-divisible noncrossing partitions is EL-shellable for every well-generated complex reflection group. This was an open problem for type G(d,d,n) and for the exceptional types, for which a proof is given case-by-case. Dans cet article nous prouvons que l'ensemble ordonnè des partitions non-croisées m-divisibles est EL-èpluchable (``EL-shellable'') pour tout groupe de réflexions complexe bien engendrè. Il s'agissait d'un problème ouvert pour le type G(d,d,n) et pour les types exceptionnels, pour lesquels nous donnons une preuve au cas par cas.
[info.info-dm] computer science [cs]/discrete mathematics [cs.dm], EL-Shellability, well-generated complex reflection groups, el-shellability, [INFO.INFO-DM] Computer Science [cs]/Discrete Mathematics [cs.DM], Well-Generated Complex Reflection Groups, m-divisible Noncrossing Partitions, Generalized Noncrossing Partitions, generalized noncrossing partitions, QA1-939, m-divisible noncrossing partitions, Mathematics
[info.info-dm] computer science [cs]/discrete mathematics [cs.dm], EL-Shellability, well-generated complex reflection groups, el-shellability, [INFO.INFO-DM] Computer Science [cs]/Discrete Mathematics [cs.DM], Well-Generated Complex Reflection Groups, m-divisible Noncrossing Partitions, Generalized Noncrossing Partitions, generalized noncrossing partitions, QA1-939, m-divisible noncrossing partitions, Mathematics
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