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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 a handwritten manuscript published with his lost notebook, Ramanujan stated without proofs forty identities for the Rogers-Ramanujan functions. We observe that the functions that appear in Ramanujan's identities can be obtained from a…

Number Theory · Mathematics 2012-07-24 Alexander Berkovich , Hamza Yesilyurt

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

The time dependent equations of motion for the pair breaking effect were corroborated with a condition that fixes dynamically the number of particles on the two fission fragment. The single particle level scheme was calculated with the…

Nuclear Theory · Physics 2015-06-17 M. Mirea

In a recent paper, Bacher and de la Harpe study the conjugacy growth series of finitary permutation groups. In the course of studying the coefficients of a series related to the finitary alternating group, they introduce generalized…

Number Theory · Mathematics 2016-07-21 Tessa Cotron , Robert Dicks , Sarah Fleming

In this note we conjecture Rogers-Ramanujan type colored partition identities for an array with odd number of rows w such that the first and the last row consist of even positive integers. In a strange way this is different from the…

Combinatorics · Mathematics 2023-01-31 Mirko Primc

We find two involutions on partitions that lead to partition identities for Ramanujan's third order mock theta functions $\phi(-q)$ and $\psi(-q)$. We also give an involution for Fine's partition identity on the mock theta function f(q).…

Combinatorics · Mathematics 2010-06-17 William Y. C. Chen , Kathy Q. Ji , Eric H. Liu

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

The purpose of this note is to introduce a new approach to the study of one of the most basic and seemingly intractable problems in partition theory, namely the conjecture that the partition function $p(n)$ is equidistributed modulo 2. Our…

Combinatorics · Mathematics 2018-08-28 Samuel D. Judge , William J. Keith , Fabrizio Zanello

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

A new sums-of-tails identity involving two parameters $b$ and $d$ is obtained and is used to derive more results of similar type. One of Ramanujan's sums-of-tails identities from the Lost Notebook is shown to be a special case of our…

Combinatorics · Mathematics 2025-08-07 Atul Dixit , Gaurav Kumar , Aviral Srivastava

We study a family of inhomogeneous Ising chain models along with an equivalent family of nearest neighbour particle systems. By the correspondence between the two families we prove identities of combinatorial significance relating to…

Probability · Mathematics 2024-01-30 Jessica Jay , Benjamin Lees

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

In 2002, Andrews, Lewis, and Lovejoy introduced the combinatorial objects which they called partitions with designated summands. These are constructed by taking unrestricted integer partitions and designating exactly one of each occurrence…

Combinatorics · Mathematics 2025-05-28 Shishuo Fu , James Sellers

In [Temme N.M., Special functions. An introduction to the classical functions of mathematical physics, A Wiley-Interscience Publication, John Wiley & Sons, Inc., New York, 1996, Section 11.3.3.1] a uniform asymptotic expansion for the…

Classical Analysis and ODEs · Mathematics 2016-10-26 Gergő Nemes , Adri B. Olde Daalhuis

We generalise Euler's partition theorem involving odd parts and different parts for all moduli and provide new companions to Rogers-Ramanujan- Andrews-Gordon identities related to this theorem.

Combinatorics · Mathematics 2020-05-18 XinHua Xiong , William J. Keith

In this paper we add to the literature on the combinatorial nature of the mock theta functions, a collection of curious $q$-hypergeometric series introduced by Ramanujan in his last letter to Hardy in 1920, which we now know to be important…

Combinatorics · Mathematics 2023-04-25 Cristina Ballantine , Hannah E. Burson , Amanda Folsom , Chi-Yun Hsu , Isabella Negrini , Boya Wen

We define the asymptotic behavior "almost everywhere" of additive and multiplicative arithmetic functions in the paper. Classes of additive and multiplicative arithmetic functions are singled out for which the asymptotics coincides "almost…

General Mathematics · Mathematics 2023-02-02 Victor Volfson

We derive the asymptotic formula for $p_n(N,M)$, the number of partitions of integer $n$ with part size at most $N$ and length at most $M$. We consider both $N$ and $M$ are comparable to $\sqrt{n}$. This is an extension of the classical…

Combinatorics · Mathematics 2019-03-14 Tiefeng Jiang , Ke Wang

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