Congruences modulo $7$ and $11$ for certain two restricted partition functions

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 For an integer $c\geq 1$, let $a_c(n)$ count the number of generalized cubic partitions of $n$, which are partitions of $n$ whose even parts may appear in $c$ different colors, and $d_c(n)$ count the number of partitions obtained by adding the links of the $c$-elongated plane partition diamonds of length $n$. We prove in this note infinite families of congruences modulo $7$ and $11$ for $a_c(n)$ and $d_c(n)$ by employing elementary $q$-series techniques. These results generalize particular congruences modulo $7$ and $11$ for $a_c(n)$ and $d_c(n)$ recently found by Dockery, and Baruah, Das, and Talukdar, respectively, using modular forms.
format Preprint
id arxiv_https___arxiv_org_abs_2508_18286
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Congruences modulo $7$ and $11$ for certain two restricted partition functions
Guadalupe, Russelle
Number Theory
Combinatorics
11P83, 05A17, 11P81
For an integer $c\geq 1$, let $a_c(n)$ count the number of generalized cubic partitions of $n$, which are partitions of $n$ whose even parts may appear in $c$ different colors, and $d_c(n)$ count the number of partitions obtained by adding the links of the $c$-elongated plane partition diamonds of length $n$. We prove in this note infinite families of congruences modulo $7$ and $11$ for $a_c(n)$ and $d_c(n)$ by employing elementary $q$-series techniques. These results generalize particular congruences modulo $7$ and $11$ for $a_c(n)$ and $d_c(n)$ recently found by Dockery, and Baruah, Das, and Talukdar, respectively, using modular forms.
title Congruences modulo $7$ and $11$ for certain two restricted partition functions
topic Number Theory
Combinatorics
11P83, 05A17, 11P81
url https://arxiv.org/abs/2508.18286