A poset structure on the alternating group generated by 3-cycles

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Contributors

Abstract

We investigate the poset structure on the alternating group that arises when the latter is generated by 3-cycles. We study intervals in this poset and give several enumerative results, as well as a complete description of the orbits of the Hurwitz action on maximal chains. Our motivating example is the well-studied absolute order arising when the symmetric group is generated by transpositions, i.e. 2-cycles, and we compare our results to this case along the way. In particular, noncrossing partitions arise naturally in both settings.

Details

Original languageEnglish
Pages (from-to)1285-1310
Number of pages26
JournalAlgebraic Combinatorics
Volume2
Issue number6
Publication statusPublished - Dec 2019
Peer-reviewedYes

Keywords

Keywords

  • Alternating group, Hurwitz action, Noncrossing partitions, Symmetric group, Zeta polynomial

Library keywords