Publication details

On the number and sizes of double cosets of Sylow subgroups of the symmetric group

Authored by

Persi Diaconis, Eugenio Giannelli, Robert M. Guralnick, Stacey Law, Gabriel Navarro, Benjamin Sambale, Hunter Spink

Abstract

Let Pn be a Sylow p-subgroup of the symmetric group Sn. We investigate the number and sizes of the Pn∖Sn/Pn double cosets, showing that ‘most’ double cosets have maximal size when p is odd, or equivalently, that Pn∩Pnx=1 for most x∈Sn when n is large. We also find that all possible sizes of such double cosets occur, modulo a list of small exceptions.

Details

Organisation(s)
Institute of Algebra, Number Theory and Discrete Mathematics
External Organisation(s)
Stanford University
University of Florence (UniFi)
University of Southern California
University of Birmingham
Universitat de Valencia (UV)
University of Toronto
Type
Article
Journal
Journal of algebra
Volume
689
Pages
62-86
No. of pages
25
ISSN
0021-8693
Publication date
01.03.2026
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Algebra and Number Theory
Electronic version(s)
https://doi.org/10.1016/j.jalgebra.2025.09.036 (Access: Open )