The $k$-elongated plane partition function modulo small powers of $5$

Fuente: arXiv
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Main Author: Guadalupe, Russelle
Format: Preprint
Published: 2025
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author Guadalupe, Russelle
author_facet Guadalupe, Russelle
contents Andrews and Paule revisited combinatorial structures known as the $k$-elongated partition diamonds, which were introduced in connection with the study of the broken $k$-diamond partitions. They found the generating function for the number $d_k(n)$ of partitions obtained by summing the links of such partition diamonds of length $n$ and discovered congruences for $d_k(n)$ using modular forms. Since then, congruences for $d_k(n)$ modulo certain powers of primes have been proven via elementary means and modular forms by many authors, most recently Banerjee and Smoot who established an infinite family of congruences for $d_5(n)$ modulo powers of $5$. We extend in this paper the list of known results for $d_k(n)$ by proving infinite families of congruences for $d_k(n)$ modulo $5,25$, and $125$ using classical $q$-series manipulations and $5$-dissections.
format Preprint
id arxiv_https___arxiv_org_abs_2504_08627
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The $k$-elongated plane partition function modulo small powers of $5$
Guadalupe, Russelle
Number Theory
Combinatorics
11P83, 05A17
Andrews and Paule revisited combinatorial structures known as the $k$-elongated partition diamonds, which were introduced in connection with the study of the broken $k$-diamond partitions. They found the generating function for the number $d_k(n)$ of partitions obtained by summing the links of such partition diamonds of length $n$ and discovered congruences for $d_k(n)$ using modular forms. Since then, congruences for $d_k(n)$ modulo certain powers of primes have been proven via elementary means and modular forms by many authors, most recently Banerjee and Smoot who established an infinite family of congruences for $d_5(n)$ modulo powers of $5$. We extend in this paper the list of known results for $d_k(n)$ by proving infinite families of congruences for $d_k(n)$ modulo $5,25$, and $125$ using classical $q$-series manipulations and $5$-dissections.
title The $k$-elongated plane partition function modulo small powers of $5$
topic Number Theory
Combinatorics
11P83, 05A17
url https://arxiv.org/abs/2504.08627