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Related papers: On partitions with even parts below odd parts

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We present a new partition identity and give a combinatorial proof of our result. This generalizes a result of Andrew's in which he considers the generation function for partitions with respect to size, number of odd parts, and number of…

Combinatorics · Mathematics 2007-05-23 Cilanne E. Boulet

The paper introduce a new type of partitions where the largest part appears exactly once, and the remaining parts constitute a partition of that largest part. We derive the generating function associated with these partitions and…

Combinatorics · Mathematics 2025-06-16 H Kaur , M Rana

This article is an extensive study of partitions with fixed number of odd and even-indexed odd parts. We use these partitions to generalize recent results of C. Savage and A. Sills. Moreover, we derive explicit formulas for generating…

Number Theory · Mathematics 2016-04-12 Alexander Berkovich , Ali Kemal Uncu

We prove multiplicative congruences mod $2^{12}$ for George Andrews's partition function, $\overline{\mathcal{EO}}(n)$, the number of partitions of $n$ in which every even part is less than each odd part and only the largest even part…

Number Theory · Mathematics 2025-05-05 Frank Garvan , Connor Morrow

Recently, Andrews considered the partitions with parts separated by parity, in which parts of a given parity are all smaller than those of the other parity. Inspired from the partitions with parts separated by parity, we investigate the…

Combinatorics · Mathematics 2025-06-03 Y. H. Chen , Thomas Y. He , Y. Hu , Y. X. Xie

In this paper, we prove some new \(q\)-series identities connecting \(4\)-regular partitions and partitions with distinct even parts with largest part being odd. We also define three new partition functions with distinct even parts except…

Number Theory · Mathematics 2026-02-18 Gaurab Bardhan , Nipen Saikia

Noting a curious link between Andrews' even-odd crank and the Stanley rank, we adopt a combinatorial approach building on the map of conjugation and continue the study of integer partitions with parts separated by parity. Our motivation is…

Number Theory · Mathematics 2025-06-11 Shishuo Fu , Dazhao Tang

Recently, Andrews defined a partition function $\mathcal{EO}(n)$ which counts the number of partitions of $n$ in which every even part is less than each odd part. He also defined a partition function $\overline{\mathcal{EO}}(n)$ which…

Number Theory · Mathematics 2020-02-19 Chiranjit Ray , Rupam Barman

Inspired by Andrews' and Bachraoui's work on partitions with repeated smallest part, we extend the concept to overpartitions. We study overpartitions with the restriction that the smallest non-overlined part appears exactly $k$ times and…

Combinatorics · Mathematics 2026-03-31 Amita Malik , Rishabh Sarma

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

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

In this paper, we generalize Andrews' partitions separated by parity to overpartitions in two ways. We investigate the generating functions for 16 overpartition families whose parts are separated by parity, and we prove various $q$-series…

Number Theory · Mathematics 2026-01-14 Kathrin Bringmann , Catherine Cossaboom , William Craig

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

In 2019, Andrews investigated integer partitions in which all parts of a given parity are smaller than those of the opposite parity and introduced eight partition functions based on the parity of the smaller parts and parts of a given…

Combinatorics · Mathematics 2025-12-01 Yan Fan , Ernest X. W. Xia

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

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

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

We explore partitions that lie in the intersection of several sets of classical interest: partitions with parts indivisible by $m$, appearing fewer than $m$ times, or differing by less than $m$. We find results on their behavior and…

Combinatorics · Mathematics 2019-11-13 William J. Keith

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

We present a dual of a family of partition identities of Andrews involving partitions with no repeated odd parts (among other conditions), along with an overpartition generalization that encapsulates both families. These were discovered…

Combinatorics · Mathematics 2017-03-16 Shashank Kanade , Matthew C. Russell
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