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In the first part of this article, we consider a Groebner basis of the differential ideal {x_1^2} with respect to "the" weighted lexicographical monomial order and show that its computation is related with an identity involving the…

Algebraic Geometry · Mathematics 2020-06-17 Pooneh Afsharijoo , Hussein Mourtada

Strict partitions are enumerated with respect to the weight, the number of parts, and the number of sequences of odd length. We write this trivariate generating function as a double sum $q$-series. Equipped with such a combinatorial set-up,…

Combinatorics · Mathematics 2024-10-15 Shishuo Fu , Haijun Li

A new combinatorial object is introduced, the part-frequency matrix sequence of a partition, which is elementary to describe and is naturally motivated by Glaisher's bijection. We prove results that suggest surprising usefulness for such a…

Combinatorics · Mathematics 2016-01-06 William J. Keith

We survey divisibility properties of the Fourier coefficients of modular functions inspired by Ramanujan. Then using recent results of the generalized Hecke operator on harmonic Maass functions and known divisibility of Fourier coefficients…

Number Theory · Mathematics 2020-12-18 Soon-Yi Kang

In a work of 1995, Alladi, Andrews, and Gordon provided a generalization of the two Capparelli identities involving certain classes of integer partitions. Inspired by that contribution, in particular as regards the general setting and the…

Number Theory · Mathematics 2020-04-07 Stefano Capparelli , Alberto Del Fra , Pietro Mercuri , Andrea Vietri

Weight-equitable partitions of graphs, which are a natural extension of the well-known equitable partitions, have been shown to be a powerful tool to weaken the regularity assumption in several well-known eigenvalue bounds. In this work we…

Combinatorics · Mathematics 2021-09-08 Aida Abiad , Christopher Hojny , Sjanne Zeijlemaker

Amdeberhan et al. (2024) introduced the notion of a generalized overcubic partition function $\overline a_c (n)$ and proved an infinite family of congruences modulo a prime $p\ge 3$ and some Ramanujan type congruences. In this paper, we…

Number Theory · Mathematics 2025-03-25 Adam Paksok , Nipen Saikia

The enumeration $d_k(n)$ of $k$-elongated plane partition diamonds has emerged as a generalization of the classical integer partition function $p(n)$. Congruences for $d_k(n)$ modulo certain powers of primes have been proven via elementary…

Number Theory · Mathematics 2025-08-19 Dandan Chen , Tianjian Xu , Siyu Yin

We give a complete classification of the unique path partitions and study congruence properties of the function which enumerates such partitions.

Combinatorics · Mathematics 2024-05-31 Christine Bessenrodt , Jørn B. Olsson , James A. Sellers

We show that, in many cases, there are infinitely many sets of partitions corresponding to a single analytical Rogers-Ramanujan type identity. This means that a single analytical Rogers-Ramanujan type identity implies the existence of…

Combinatorics · Mathematics 2021-01-06 Pietro Mercuri

The notion of cubic partitions is introduced by Hei-Chi Chan and named by Byungchan Kim in connection with Ramanujan's cubic continued fractions. Chan proved that cubic partition function has Ramanujan Type congruences modulo powers of $3$.…

Number Theory · Mathematics 2016-05-31 Xinhua Xiong

Let $c_N(n)$ denotes the number of bipartitions $(\lambda, \mu)$ of a positive integer $n$ subject to the restriction that each part of $\mu$ is divisible by $N$. In this paper, we prove some congruence properties of the function $c_N(n)$…

Number Theory · Mathematics 2016-03-31 Nipen Saikia , Chayanika Boruah

It is well known that Ramanujan conjectured congruences modulo powers of 5, 7 and and 11 for the partition function. These were subsequently proved by Watson (1938) and Atkin (1967). In 2009 Choi, Kang, and Lovejoy proved congruences modulo…

Number Theory · Mathematics 2021-01-05 Dandan Chen , Rong Chen , Frank Garvan

Based on a bijection due to Fu and Tang, we provide combinatorial proofs of several partition identities of Andrews and Merca. We also introduce two weights for partitions to extend one of these identities.

Combinatorics · Mathematics 2024-11-19 Ji-Cai Liu , Huan Liu

Recently, Nayaka and Naika (2022) proved several congruences modulo $16$ and $32$ for $t$-colored overpartitions with $t=5,7,11$ and $13$. We extend their list using an algorithmic technique.

Number Theory · Mathematics 2023-01-25 Manjil P. Saikia

For a fixed positive integer $k$, let $C(k,n)$ denote the number of two-color partitions of $n$ with odd smallest part and restrictions on even parts, and let $C_k(q)$ be its generating function. We show that $C(1,n)\equiv d(2n-1)\pmod{4}$…

Number Theory · Mathematics 2026-03-10 George E. Andrews , Mohamed El Bachraoui

In 2024, Garvan, Sellers and Smoot discovered a remarkable symmetry in the families of congruences for generalized Frobenius partitions $c\psi_{2,0}$ and $c\psi_{2,1}$. They also emphasized that the considerations for the general case of…

Number Theory · Mathematics 2026-02-10 Rong Chen , Xiao-Jie Zhu

A generalized crank ($k$-crank) for $k$-colored partitions is introduced. Following the work of Andrews-Lewis and Ji-Zhao, we derive two results for this newly defined $k$-crank. Namely, we first obtain some inequalities between the…

Combinatorics · Mathematics 2017-06-29 Shishuo Fu , Dazhao Tang

We prove several congruences satisfied by the generalized cubic and generalized overcubic partition functions, recently introduced by Amdeberhan, Sellers, and Singh. We also prove infinite families of congruences modulo powers of $2$ and…

Number Theory · Mathematics 2026-04-29 Hirakjyoti Das , Saikat Maity , Manjil P. Saikia

In this paper, we find an identity which connects the overpartition function and the function of Rogers--Ramanujan--Gordon type overpartitions by considering the weights and gaps. This identity can be seen as an analogue of the weighted…

Combinatorics · Mathematics 2017-04-21 Jeremy J. F. Guo , Doris D. M. Sang , Diane Y. H. Shi