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Ramanujan's lost notebook contains many mock theta functions and mock theta function identities not mentioned in his last letter to Hardy. For example, we find the four tenth-order mock theta functions and their six identities. The six…

Number Theory · Mathematics 2024-03-11 Eric T. Mortenson

In this paper we present experimental ways of evaluating Ramanujan`s quantities which as someone can see are related with algebraic numbers. The good thing with algebraic numbers is that can be found in a closed form, from there…

General Mathematics · Mathematics 2009-12-31 Nikos Bagis

We derive two new analogues of a transformation formula of Ramanujan involving the Gamma and Riemann zeta functions present in the Lost Notebook. Both involve infinite series consisting of Hurwitz zeta functions and yield modular relations.…

Number Theory · Mathematics 2009-04-08 Atul Dixit

In this paper we obtain asymptotic formulas for the Fourier coefficients of an infinite family of crank generating functions. Moreover we use this result to show that the crank obeys certain inequalities. This implies that the crank can not…

Number Theory · Mathematics 2013-11-19 Jose Miguel Zapata Rolon

We obtain a finite analogue of a recent generalization of an identity in Ramanujan's Notebooks. Differentiating it with respect to one of the parameters leads to a result whose limiting case gives a finite analogue of Andrews' famous…

Number Theory · Mathematics 2018-12-05 Atul Dixit , Pramod Eyyunni , Bibekananda Maji , Garima Sood

In this article we present evaluations of continued fractions studied by Ramanujan. More precisely we give the complete polynomial equations of Rogers-Ramanujan and other continued fractions, using tools from the elementary theory of the…

General Mathematics · Mathematics 2014-06-25 Nikos Bagis

Moments of the partition rank and crank statistics have been studied for their connections to combinatorial objects such as Durfee symbols, as well as for their connections to harmonic Maass forms. This paper proves a conjecture due to…

Number Theory · Mathematics 2014-02-26 K. Bringmann , K. Mahlburg , R. Rhoades

The primary purpose of this paper is to provide a survey of properties, values, identities, and generalizations of the Rogers--Ramanujan continued fraction, which is closely related to the Rogers--Ramanujan identities. Many of these results…

Number Theory · Mathematics 2026-03-03 Bruce C. Berndt , Örs Rebák

It is shown how many of the partial theta function identities in Ramanujan's lost notebook can be generalized to infinite families of such identities. Key in our construction is the Bailey lemma and a new generalization of the Jacobi triple…

Quantum Algebra · Mathematics 2008-07-09 S. Ole Warnaar

We examine an identity originally stated in Ramanujan's ``lost notebook'' and first proven algebraically by Andrews and combinatorially by Kim. We give two independent combinatorial proofs and interpretations of this identity, which also…

Combinatorics · Mathematics 2009-11-04 Paul Levande

In his lost notebook, Ramanujan recorded beautiful identities. These include earlier versions of Koshliakov's formula for the divisor function and the transformation formula for the logarithm of Dedekind's $\eta-$function. In this paper we…

Number Theory · Mathematics 2023-07-10 Pedro Ribeiro , Semyon Yakubovich

Very recently, Radchenko and Zagier revived the theory of Herglotz functions. The main goal of the article is to show that one of the formulas on page 220 of Ramanujan's Lost Notebook actually lives in the realms of this theory. As a…

Number Theory · Mathematics 2022-04-12 Rajat Gupta , Rahul Kumar

This note discusses elliptic functions in Ramanujan's work.

History and Overview · Mathematics 2024-10-30 Shaun Cooper

The Lost Notebook of Ramanujan contains a number of beautiful formulas, one of which can be found on its page 220. It involves an interesting function, which we denote as $\mathcal{F}_1(x)$. In this paper, we show that $\mathcal{F}_1(x)$…

Number Theory · Mathematics 2025-04-25 YoungJu Choie , Rahul Kumar

In 1919, Ramanujan discovered his famous congruences for the partition function. Not too long after, Freeman Dyson conjectured a combinatorial statistic existed that explained the three congruences, which he dubbed the \textit{crank}. A…

Combinatorics · Mathematics 2026-03-23 Samuel Wilson

It is well known that Ramanujan conjectured congruences modulo powers of 5, 7 and and 11 for the partition function. These were subsequently proved by Watson (1938) and Atkin (1967). In 2009 Choi, Kang, and Lovejoy proved congruences modulo…

Number Theory · Mathematics 2021-01-05 Dandan Chen , Rong Chen , Frank Garvan

In this paper we consider the first four of the eight identities between the tenth order mock theta functions, found in Ramanujan's lost notebook. These were originally proved by Choi. Here we give an alternative (much shorter) proof.

Number Theory · Mathematics 2014-02-26 Sander Zwegers

We study Andrews and Berndt's organization of Ramanujan's transformation formulas in Chapter 1 of their book Ramanujan's Lost Notebook, Part II. In the process, we rediscover a bibasic Heine's transformation, which follows from a…

Combinatorics · Mathematics 2019-05-01 Gaurav Bhatnagar

In a recent paper G. Bhatnagar has given simple proofs of some of Ramanujan's continued fractions. In this note we show that some variants of these continued fractions are generating functions of q-Schroeder-like numbers.

History and Overview · Mathematics 2012-10-02 Johann Cigler

We study a continued fraction due to Ramanujan, that he recorded as Entry 12 in Chapter 16 of his second notebook. It is presented in Part III of Berndt's volumes on Ramanujan's notebooks. We give two alternate approaches to proving…

Classical Analysis and ODEs · Mathematics 2019-08-12 Gaurav Bhatnagar , Mourad E. H. Ismail