The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions

A beautiful recent conjecture of Armstrong predicts the average size of a partition that is simultaneously an s-core and a t-core, where s and t are coprime. Our goal is to prove this conjecture when t = s + 1. These simultaneous (s, s + 1)-core partitions, which are enumerated by Catalan numbers,...

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Main Authors: Zanello, Fabrizio, Stanley, Richard P
Other Authors: Massachusetts Institute of Technology. Department of Mathematics
Format: Article
Language:en_US
Published: Society for Industrial and Applied Mathematics 2017
Online Access:http://hdl.handle.net/1721.1/106353
https://orcid.org/0000-0003-3123-8241
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author Zanello, Fabrizio
Stanley, Richard P
author2 Massachusetts Institute of Technology. Department of Mathematics
author_facet Massachusetts Institute of Technology. Department of Mathematics
Zanello, Fabrizio
Stanley, Richard P
author_sort Zanello, Fabrizio
collection MIT
description A beautiful recent conjecture of Armstrong predicts the average size of a partition that is simultaneously an s-core and a t-core, where s and t are coprime. Our goal is to prove this conjecture when t = s + 1. These simultaneous (s, s + 1)-core partitions, which are enumerated by Catalan numbers, have average size (s+1 over 3)/2.
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spelling mit-1721.1/1063532022-09-30T08:55:34Z The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions Zanello, Fabrizio Stanley, Richard P Massachusetts Institute of Technology. Department of Mathematics Stanley, Richard P A beautiful recent conjecture of Armstrong predicts the average size of a partition that is simultaneously an s-core and a t-core, where s and t are coprime. Our goal is to prove this conjecture when t = s + 1. These simultaneous (s, s + 1)-core partitions, which are enumerated by Catalan numbers, have average size (s+1 over 3)/2. 2017-01-12T15:22:03Z 2017-01-12T15:22:03Z 2015-03 2013-12 Article http://purl.org/eprint/type/JournalArticle 0895-4801 1095-7146 http://hdl.handle.net/1721.1/106353 Stanley, Richard P., and Fabrizio Zanello. “The Catalan Case of Armstrong’s Conjecture on Simultaneous Core Partitions.” SIAM Journal on Discrete Mathematics 29.1 (2015): 658–666. © 2015 Society for Industrial and Applied Mathematics https://orcid.org/0000-0003-3123-8241 en_US http://dx.doi.org/10.1137/130950318 SIAM Journal on Discrete Mathematics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Society for Industrial and Applied Mathematics SIAM
spellingShingle Zanello, Fabrizio
Stanley, Richard P
The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions
title The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions
title_full The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions
title_fullStr The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions
title_full_unstemmed The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions
title_short The Catalan Case of Armstrong's Conjecture on Simultaneous Core Partitions
title_sort catalan case of armstrong s conjecture on simultaneous core partitions
url http://hdl.handle.net/1721.1/106353
https://orcid.org/0000-0003-3123-8241
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