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We study the generating functions for cylindric partitions with profile $(c_1,c_2,c_3)$ for all $c_1,c_2,c_3$ such that $c_1+c_2+c_3=5$. This allows us to discover and prove seven new $A_2$ Rogers-Ramanujan identities modulo $8$ with…

Combinatorics · Mathematics 2020-11-26 Sylvie Corteel , Jehanne Dousse , Ali K. Uncu

Recently, Andrews and Dastidar introduced the partition function $SOME(n)$, defined as the sum of all the odd parts in the partitions of $n$ minus the sum of all the even parts in the partitions of $n$. They derived its generating function…

Combinatorics · Mathematics 2026-03-16 D. S. Gireesh , B. Hemanthkumar

We introduce a new type of partitions that consists of partitions whose different parts alternate in parity (e.g., $3+2+2+1+1$). Various properties of this partition function are studied. In particular, we obtain its asymptotic behavior by…

Combinatorics · Mathematics 2018-03-06 Shane Chern

In a 2016 paper, Straub proved an analogue to Euler's partition identity for partitions with fixed perimeter. Later, Fu and Tang provided a refinement and generalization of Straub's analogue to $d$-distinct partitions as well as a result…

Number Theory · Mathematics 2024-06-13 Ling Chen , Isabelle Hernandez , Zain Shields , Holly Swisher

Anderson established a connection between core partitions and order ideals of certain posets by mapping a partition to its $\beta$-set. In this paper, we give a characterization of the poset $P_{(s,s+1,s+2)}$ whose order ideals correspond…

Combinatorics · Mathematics 2014-07-10 Jane Y. X. Yang , Michael X. X. Zhong , Robin D. P. Zhou

We prove various inequalities between the number of partitions with the bound on the largest part and some restrictions on occurrences of parts. We explore many interesting consequences of these partition inequalities. In particular, we…

Combinatorics · Mathematics 2017-08-08 Alexander Berkovich , Ali K. Uncu

In this paper, we consider the set of partitions $pend(n)$ which enumerates the number of partitions of $n$ wherein the even parts are not allowed to be distinct. Using a result of Newman, we prove a few infinite families of congruences…

Number Theory · Mathematics 2024-07-16 Hemjyoti Nath

A special case of an elegant result due to Anderson proves that the number of $(s,s+1)$-core partitions is finite and is given by the Catalan number $C_s$. Amdeberhan recently conjectured that the number of $(s,s+1)$-core partitions into…

Combinatorics · Mathematics 2016-01-27 Armin Straub

Very recently, Thejitha, Sellers, and Fathima defined the function $a_{r,s}(n)$, which enumerates the number of multicolored partitions of $n$, wherein both even parts and odd parts may appear in one of $r$-colors and $s$-colors,…

Combinatorics · Mathematics 2026-03-11 M. P. Thejitha , S. N. Fathima

For a partition $\lambda \vdash n$, we let $\operatorname{pd}(\lambda)$, the parity difference of $\lambda$, be the number of odd parts of $\lambda$ minus the number of even parts of $\lambda$. We prove for $c_0\in\mathbb{R}$ an asymptotic…

Number Theory · Mathematics 2025-04-04 Siu Hang Man

This is the third and final installment in our series of papers applying the method of Atkin and Swinnerton-Dyer to deduce formulas for rank differences. The study of rank differences was initiated by Atkin and Swinnerton-Dyer in their…

Number Theory · Mathematics 2021-02-03 Jeremy Lovejoy , Robert Osburn

Andrews studied a function which appears in Ramanujan's identities. In Ramanujan's "Lost" Notebook, there are several formulas involving this function, but they are not as simple as the identities with other similar shape of functions.…

Number Theory · Mathematics 2017-03-07 Min-Joo Jang

Andrews imposed parity restrictions on the Rogers-Ramanujan-Gordon type partitions, yielding fruitful results. These results were later, advanced by Kur\c{s}ung\"{o}z, Kim, and Yee. In this paper, we construct a bijection between lattice…

Combinatorics · Mathematics 2024-01-30 Diane Y. H. Shi

Using the index theory of seaweed algebras, we explore various new integer partition statistics. We find relations to some well-known varieties of integer partitions as well as a surprising periodicity result.

Combinatorics · Mathematics 2018-10-10 Vincent Coll , Andrew Mayers , Nick Mayers

In a recent paper, Andrews and Newman introduced certain families of partition functions using the minimal excludant or "mex" function. In this article, we study two of the families of functions Andrews and Newman introduced, namely…

Number Theory · Mathematics 2020-09-25 Rupam Barman , Ajit Singh

We study cylindric partitions with two-element profiles using MacMahon's partition analysis. We find explicit formulas for the generating functions of the number of cylindric partitions by first finding the recurrences using partition…

Combinatorics · Mathematics 2025-02-03 Runqiao Li , Ali K. Uncu

We prove combinatorially some identities related to Euler's partition identity (the number of partitions of $n$ into distinct parts equals the number of partitions of $n$ into odd parts). They were conjectured by Beck and proved by Andrews…

Combinatorics · Mathematics 2018-07-02 Cristina Ballantine , Richard Bielak

For positive integers $k, l \geq 2$, the set of $k$-regular partitions in which parts appear at most $l$ times has attracted a lot of interest in that a composition of Glaisher's mapping can be used to prove the associated partition…

Combinatorics · Mathematics 2023-10-31 Darlison Nyirenda , Molatelo Rapudi

In this paper, we generalize a few important results in Integer Partitions; namely the results known as Stanley's theorem and Elder's theorem, and the congruence results proposed by Ramanujan for the partition function. We generalize the…

Discrete Mathematics · Computer Science 2011-11-02 Manosij Ghosh Dastidar , Sourav Sen Gupta

Let $\bar{a}_s(n)$ denote the number of partitions of $n$, wherein each odd part is multicolored (atmost $s\ge 1$ colors) and the first appearance of parts may be overlined. In this paper, we establish new families of congruences modulo…

Number Theory · Mathematics 2026-05-21 M. P. Thejitha , S. N. Fathima