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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

We give short elementary expositions of combinatorial proofs of some variants of Euler's partitition problem that were first addressed analytically by George Andrews, and later combinatorially by others. Our methods, based on ideas from a…

Combinatorics · Mathematics 2021-07-19 Aritro Pathak

In a recent paper, Andrews and Merca investigated the number of even parts in all partitions of $n$ into distinct parts, which arise naturally from the Euler-Glaisher bijective proof. They obtained new combinatorial interpretations for this…

Combinatorics · Mathematics 2022-07-11 Jiyou Li , Sicheng Zhao

Euler's identity equates the number of partitions of any non-negative integer n into odd parts and the number of partitions of n into distinct parts. Beck conjectured and Andrews proved the following companion to Euler's identity: the…

Combinatorics · Mathematics 2022-02-08 Cristina Ballantine , Hannah E. Burson , Amanda Folsom , Chi-Yun Hsu , Isabella Negrini , Boya Wen

In this paper, we prove a conjecture proposed by George Beck, which involves gap-free partitions and partitions with distinct parts.

Number Theory · Mathematics 2018-05-23 Shane Chern

The original Beck conjecture, now a theorem due to Andrews, states that the difference in the number of parts in all partitions into odd parts and the number of parts in all strict partitions is equal to the number of partitions whose set…

Combinatorics · Mathematics 2021-01-21 Cristina Ballantine , Amanda Welch

Motivated by Andrews' recent work related to Euler's partition theorem, we consider the set of partitions of an integer $n$ where the set of even parts has exactly $j$ elements, versus the set of partitions of $n$ where the set of repeated…

Combinatorics · Mathematics 2017-05-16 Shishuo Fu , Dazhao Tang

Euler showed that the number of partitions of $n$ into distinct parts equals the number of partitions of $n$ into odd parts. This theorem was generalized by Glaisher and further by Franklin. Recently, Beck made three conjectures on…

Combinatorics · Mathematics 2020-02-20 Jia Huang

In his recent work, Andrews revisited two-color partitions with certain restrictions on the differences between consecutive parts, and he established three theorems linking these two-color partitions with more familiar kinds of partitions.…

Combinatorics · Mathematics 2022-02-08 Shishuo Fu

Recently Andrews and Bachraoui proved identities relating certain restricted partitions into distinct even parts with restricted 4-regular partitions by the theory of basic hypergeometric series. They also posed a question regarding…

Combinatorics · Mathematics 2025-09-01 Dandan Chen , Ziyin Zou

Recently, Andrews and El Bachraoui considered the number of integer partitions whose smallest part is repeated exactly $k$ times and the remaining parts are not repeated. They presented several interesting results and posed questions…

Combinatorics · Mathematics 2025-05-15 Dandan Chen , Rong Chen , Mengjie Zhao

In this paper, we present a generalization of one of the theorems in [G. E. Andrews, Partitions with parts separated by parity, \textit{Annals of Combinatorics} \textbf{23}(2019), 241 - 248], and give its bijective proof. Further variations…

Number Theory · Mathematics 2021-08-31 Abdulaziz M. Alanazi , Darlison Nyirenda

In this paper, we give a conjecture, which generalises Euler's partition theorem involving odd parts and different parts for all moduli. We prove this conjecture for two family partitions. We give $q$-difference equations for the related…

Combinatorics · Mathematics 2020-05-19 Xinhua Xiong , William J. Keith

Andrews and El Bachraoui recently studied integer partitions where the smallest part is repeated a specified number of times and any other parts are distinct. Their results included two ``surprising identities'' for which they requested…

Combinatorics · Mathematics 2025-08-26 Brian Hopkins

Recently, George Andrews has given a Glaisher style proof of a finite version of Euler's partition identity. We generalise this result by giving a finite version of Glaisher's partition identity. Both the generating function and bijective…

Combinatorics · Mathematics 2016-12-06 Darlison Nyirenda

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

We consider the number of various partitions of $n$ with parts separated by parity and prove combinatorially several inequalities between these numbers. For example, we show that for $n\geq 5$ we have $p_{od}^{eu}(n)<p_{ed}^{ou}(n)$, where…

Combinatorics · Mathematics 2024-06-04 Cristina Ballantine , Amanda Welch

Partitions with distinct even parts have long been the subject of extensive research. In this paper, We present some new perspectives on such partitions from a combinatorial viewpoint, and connect them with signed partitions and bicolored…

Combinatorics · Mathematics 2026-03-12 Haijun Li

PED partitions are partitions with even parts distinct while odd parts are unrestricted. Similarly, POD partitions have distinct odd parts while even parts are unrestricted. Merca proved several recurrence relations analytically for the…

Combinatorics · Mathematics 2023-08-14 Cristina Ballantine , Amanda Welch

In his paper, "On a Partition Function of Richard Stanley," George Andrews proves a certain partition identity analytically and asks for a combinatorial proof. This paper provides the requested combinatorial proof.

Combinatorics · Mathematics 2018-11-29 Andrew V. Sills
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