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EL-Shellability of Generalized Noncrossing Partitions

Authors: Henri Mühle;

EL-Shellability of Generalized Noncrossing Partitions

Abstract

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.

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Keywords

[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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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
Published in a Diamond OA journal