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We give short proofs of conjectural identities due to Gordon and McIntosh involving two 10th order mock theta functions.

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

We find exact identities for sums of the form \begin{equation*}\label{eq:convsumabs} \sum_{\stackrel{n_1+n_2 = n}{n_1 \in \mathbb{Z} \setminus \{ 0, n \} }} Q(n_1,n_2) \sigma_{-r_1}(n_1) \sigma_{-r_2}(n_2), \end{equation*} where…

Number Theory · Mathematics 2025-12-29 Ksenia Fedosova , Kim Klinger-Logan

In any positive genus case, we show an explicit formula of the Mumford forms expressed by infinite products like Selberg type zeta values for Schottky groups. This result is considered as an extension of the formula in terms of Ramanujan's…

Number Theory · Mathematics 2014-09-05 Takashi Ichikawa

The Rogers-Ramanujan identities have been studied from the viewpoints of combinatorics, number theory, affine Lie algebras, statistical mechanics, and quantum field theory. This note connects the Rogers-Ramanujan identities with the finite…

Combinatorics · Mathematics 2007-05-23 Jason Fulman

We prove analytic and combinatorial identities reminiscent of Schur's classical partition theorem. Specifically, we show that certain families of overpartitions whose parts satisfy gap conditions are equinumerous with partitions whose parts…

Number Theory · Mathematics 2013-11-22 Kathrin Bringmann , Jeremy Lovejoy , Karl Mahlburg

In this note we give new proofs of two recent mock theta function identities discovered by Garvan and Mukhopadhyay. We also give a new proof of an old mock theta function identity of Watson. Using the setting of Appell function properties…

Number Theory · Mathematics 2026-05-07 Marioni Aronia , Eric T. Mortenson

We study the meromorphy of various Euler products of degree two attached to cusp forms including Ramanujan's $\Delta$-function.

Number Theory · Mathematics 2021-04-13 Shin-ya Koyama , Nobushige Kurokawa

In this we paper we prove several new identities of the Rogers-Ramanujan-Slater type. These identities were found as the result of computer searches. The proofs involve a variety of techniques, including series-series identities, Bailey…

Number Theory · Mathematics 2018-12-27 Douglas Bowman , James Mc Laughlin , Andrew V. Sills

We evaluate some finite and infinite sums involving $q$-trigonometric and $q$-digamma functions. Upon letting $q$ approach $1$, one obtains corresponding sums for the classical trigonometric and the digamma functions. Our key argument is a…

Number Theory · Mathematics 2019-03-08 Mohamed El Bachraoui , József Sándor

We give "hybrid" proofs of the $q$-binomial theorem and other identities. The proofs are "hybrid" in the sense that we use partition arguments to prove a restricted version of the theorem, and then use analytic methods (in the form of the…

Number Theory · Mathematics 2019-01-17 Dennis Eichhorn , James Mc Laughlin , Andrew V. Sills

In this paper, we derive eight basic identities of symmetry in three variables related to $q$-Bernoulli polynomials and the $q$-analogue of power sums. These and most of their corollaries are new, since there have been results only about…

Number Theory · Mathematics 2010-03-18 Dae San Kim

The celebrated quintuple product identity follows surprisingly from an almost-trivial algebraic identity, which is the limiting case of the terminating q-Dixon formula.

Combinatorics · Mathematics 2007-05-23 William Y. C. Chen , Wenchang Chu , Nancy S. S. Gu

We expand on the remark by Andrews on the importance of infinite sums and products in combinatorics. Let $\{g_d(n)\}_{d\geq 0,n \geq 1}$ be the double sequences $\sigma_d(n)= \sum_{\ell \mid n} \ell^d$ or $\psi_d(n)= n^d$. We associate…

Combinatorics · Mathematics 2023-02-28 Bernhard Heim , Markus Neuhauser

We give a new theta-function identity, a special case of which is utilised to prove Kawanaka's Macdonald polynomial conjecture. The theta-function identity further yields a transformation formula for multivariable elliptic hypergeometric…

Classical Analysis and ODEs · Mathematics 2009-05-26 Robin Langer , Michael J. Schlosser , S. Ole Warnaar

At the 1987 Ramanujan Centenary meeting Dyson asked for a coherent group-theoretical structure for Ramanujan's mock theta functions analogous to Hecke's theory of modular forms. Many of Ramanujan's mock theta functions can be written in…

Number Theory · Mathematics 2023-08-22 F. G. Garvan , Rishabh Sarma

In this paper, we derive eight basic identities of symmetry in three variables related to $q$-Euler polynomials and the $q$-analogue of alternating power sums. These and most of their corollaries are new, since there have been results only…

Number Theory · Mathematics 2010-04-12 Dae San Kim

Via the contour integral method, we establish a reduction formula from a double series to a single series with parameters, which not only implies Uncu and Zudilin's two results and Cao and Wang's two results, but also is related to…

Combinatorics · Mathematics 2024-08-29 Chuanan Wei , Yuanbo Yu , Guozhu Ruan

In this paper we derive many infinite families of explicit exact formulas involving either squares or triangular numbers, two of which generalize Jacobi's 4 and 8 squares identities to 4n^2 or 4n(n+1) squares, respectively, without using…

Number Theory · Mathematics 2007-05-23 Stephen C. Milne

Motivated by the works of Liu, we provide a unified approach to find Appell-Lerch series and Hecke-type series representations for mock theta functions. We establish a number of parameterized identities with two parameters $a$ and $b$.…

Number Theory · Mathematics 2019-08-26 Dandan Chen , Liuquan Wang

This is the second part of the paper (the first part is published in Jour. of AMS, vol.9, 1135--1170, q-alg/9508017). In the first part, we defined for every modular tensor category (MTC) inner products on the spaces of morphisms and proved…

q-alg · Mathematics 2008-11-26 Alexander Kirillov