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Motivated by the resemblance of a multivariate series identity and a finite analogue of Euler's pentagonal number theorem, we study multiple extensions of the latter formula. In a different direction we derive a common extension of this…

Combinatorics · Mathematics 2011-03-25 Victor J. W. Guo , Jiang Zeng

In this paper, we study the $5$-dissections of certain Ramanujan's theta functions, particularly $\psi(q)\psi(q^2), \varphi(-q)$ and $\varphi(-q)\varphi(-q^2)$, and derive an identity for $q(q;q)_{\infty}^6/(q^5;q^5)_{\infty}^6$ in terms of…

Number Theory · Mathematics 2024-10-21 Russelle Guadalupe

I use polynomial analogue of the Jacobi triple product identity together with the Eisenstein formula for the Legendre symbol modulo 3 . to prove six identities involving the $q$-binomial coefficients. These identities are then extended to…

Number Theory · Mathematics 2023-02-14 Alexander Berkovich

$q$-Analogues of the coefficients of $x^a$ in the expansion of $\prod_{j=1}^N (1+x+...+x^j)^{L_j}$ are proposed. Useful properties, such as recursion relations, symmetries and limiting theorems of the ``$q$-supernomial coefficients'' are…

q-alg · Mathematics 2008-02-03 Anne Schilling , S. Ole Warnaar

Recently, Simon Plouffe has discovered a number of identities for the Riemann zeta function at odd integer values. These identities are obtained numerically and are inspired by a prototypical series for Apery's constant given by Ramanujan:…

Number Theory · Mathematics 2011-08-09 Linas Vepstas

We derived $q$-continued fractions $X_i(q)$ of order thirty-four and continued fractions $Y_i(q)$ of order sixty-eight from a general continued fraction identity of Ramanujan, where $i=1,2,3,4,5,6,7$ and $8$. We established some…

Number Theory · Mathematics 2026-05-29 Dipika Sarkar , S. N. Fathima

Recently, Wang and Zeng investigated modularity of partial Nahm sums and discovered 14 modular families of such sums. They confirmed modularity for 13 families and proposed a conjecture consisting of two Rogers--Ramanujan type identities…

Number Theory · Mathematics 2025-07-29 Changsong Shi , Liuquan Wang

On page 206 in his lost notebook, Ramanujan recorded a seventh degree identity for his theta function $\varphi(q)$. We give an analogous ninth degree identity. We also provide an application of an entry from his second notebook on a cubic…

Number Theory · Mathematics 2025-06-03 Sun Kim , Örs Rebák

Bhoria, Eyyunni and Maji recently obtained a four-parameter $q$-series identity which gives as special cases not only all five entries of Ramanujan on pages 354 and 355 of his second notebook but also allows them to obtain an analytical…

Number Theory · Mathematics 2022-07-04 Atul Dixit , Khushbu Patel

It was recently shown that $q\omega(q)$, where $\omega(q)$ is one of the third order mock theta functions, is the generating function of $p_{\omega}(n)$, the number of partitions of a positive integer $n$ such that all odd parts are less…

Number Theory · Mathematics 2016-03-15 George E. Andrews , Atul Dixit , Daniel Schultz , Ae Ja Yee

Let $n$ be an odd positive integer. In this short elementary note, we slightly extend Macdonald's identity for $\mathfrak{sl}_{n}$ into a two-variables identity in the spirit of Jacobi forms. The peculiarity of this work lies in its proof…

Number Theory · Mathematics 2019-07-03 Quentin Gazda

The usual nonnegative modulus function is based on addition. A natural different modulus function on the set of positive reals is introduced. Arguments for results for series through the usual modulus function are transformed to arguments…

General Mathematics · Mathematics 2019-12-10 C. Ganesa Moorthy

We extend Norton-Borcherds-Koike's replication formulae to super-replicable ones by working with the congruence groups $\Gamma_1(N)$ and find the product identities which characterize super-replicable functions. These will provide a clue…

Number Theory · Mathematics 2007-05-23 Chang Heon Kim , Ja Kyung Koo

An exact transformation, which we call the \emph{master identity}, is obtained for the first time for the series $\sum_{n=1}^{\infty}\sigma_{a}(n)e^{-ny}$ for $a\in\mathbb{C}$ and Re$(y)>0$. New modular-type transformations when $a$ is a…

Number Theory · Mathematics 2022-05-06 Atul Dixit , Aashita Kesarwani , Rahul Kumar

Let $(u_n)_{n\ge 0}$ denote the Thue-Morse sequence with values $\pm 1$. The Woods-Robbins identity below and several of its generalisations are well-known in the literature…

Number Theory · Mathematics 2018-05-17 Samin Riasat

We prove polynomial identities for the N=1 superconformal model SM(2,4\nu) which generalize and extend the known Fermi/Bose character identities. Our proof uses the q-trinomial coefficients of Andrews and Baxter on the bosonic side and a…

High Energy Physics - Theory · Physics 2009-10-28 Alexander Berkovich , Barry M. McCoy , William P. Orrick

Andrews and the third author recently studied congruences for certain restricted two-color partitions. They made two conjectures for Ramanujan-type congruences and a vanishing identity for the limiting sequence. In this paper, we settle…

Number Theory · Mathematics 2026-04-03 Koustav Banerjee , Kathrin Bringmann , Mohamed El Bachraoui

Motivated by two identities published with Ramanujan's lost notebook and connected, respectively, with the Gauss circle problem and the Dirichlet divisor problem, in an earlier paper, three of the present authors derived representations for…

Number Theory · Mathematics 2021-02-25 Bruce C. Berndt , Martino Fassina , Sun Kim , Alexandru Zaharescu

We show that all of Ramanujan's mock theta functions of order 3, Watson's three additional mock theta functions of order 3, the Rogers-Ramanujan q-series, and 6 mock theta functions of order 5 take on irrational values at the points q=\pm…

Number Theory · Mathematics 2007-12-27 Angelo B. Mingarelli

The two partition functions $p_\omega(n)$ and $p_\nu(n)$ were introduced by Andrews, Dixit and Yee, which are related to the third order mock theta functions $\omega(q)$ and $\nu(q)$, respectively. Recently, Andrews and Yee analytically…

Combinatorics · Mathematics 2020-02-26 Frank Z. K. Li , Jane Y. X. Yang