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We derive certain identities involving various known arithmetical functions and a generalized version of Ramanujan sum. L. Toth constructed certain weighted averages of Ramanujan sums with various arithmetic functions as weights. We choose…

Number Theory · Mathematics 2018-05-08 K Vishnu Namboothiri

The partial fraction expansion of coth($\pi$z), due to Euler, is generalized to power series having for coefficients the Riemann zeta function evaluated at certain arithmetic sequences. A further generalization using arbitrary Dirichlet…

Complex Variables · Mathematics 2015-11-17 Claude Henri Picard

We generalize certain recent results of Ushiroya concerning Ramanujan expansions of arithmetic functions of two variables. We also show that some properties on expansions of arithmetic functions of one and several variables using classical…

Number Theory · Mathematics 2018-11-13 László Tóth

We show how to find series expansions for $\pi$ of the form $\pi=\sum_{n=0}^\infty {S(n)}\big/{\binom{mn}{pn}a^n}$, where S(n) is some polynomial in $n$ (depending on $m,p,a$). We prove that there exist such expansions for $m=8k$, $p=4k$,…

Number Theory · Mathematics 2007-05-23 Gert Almkvist , Christian Krattenthaler , Joakim Petersson

The goal of this paper is to formulate a systematical method for constructing the fastest possible continued fraction approximations of a class of functions. The main tools are the multiple-correction method, the generalized Mortici's lemma…

Classical Analysis and ODEs · Mathematics 2015-08-04 Xiaodong Cao , Yoshio Tanigawa , Wenguang Zhai

Assuming the generalized Lindel\"of hypothesis, we provide asymptotic formulas for the mean values of the first and second moments of Ramanujan sums over any number field. Additionally, unconditionally, we estimate the second moment of…

Number Theory · Mathematics 2024-01-11 Sneha Chaubey , Shivani Goel

In this paper, we rewrite two forms of an Euler-Ramanujan identity in terms of certain Dirichlet series and derive functional equation of the latter. We also use the Weierstrass-Enneper representation of minimal surfaces to obtain some…

Number Theory · Mathematics 2019-08-21 Rukmini Dey , Rishabh Sarma , Rahul Kumar Singh

We give summation formulae for the bilateral basic hypergeometric series ${}_1\psi_1( a; b; q, z )$ through Ramanujan's summation formula, which are generalizations of nontrivial identities found in the physics of three-dimensional Abelian…

Classical Analysis and ODEs · Mathematics 2016-03-23 Hironori Mori , Takeshi Morita

We present a general procedure to generate infinitely many BBP and BBP-like formulas for the simplest transcendental numbers. This provides some insight and a better understanding into their nature. In particular, we can derive the main…

Number Theory · Mathematics 2023-02-15 Daniel Barsky , Vicente Muñoz , Ricardo Pérez-Marco

In this article we continue a previous work in which we have generalized the Rogers Ramanujan continued fraction (RR) introducing what we call, the Ramanujan-Quantities (RQ). We use the Mathematica package to give several modular equations…

General Mathematics · Mathematics 2012-08-08 Nikos Bagis

The polynomial Ramanujan sum was first introduced by Carlitz [7], and a generalized version by Cohen [10]. In this paper, we study the arithmetical and analytic properties of these sums, derive various fundamental identities, such as H…

Number Theory · Mathematics 2016-12-28 Zhiyong Zheng

The derivation of the Hardy-Ramanujan-Rademacher formula for the number of partitions of $n$ is reviewed. Next, the steps for finding analogous formulas for certain restricted classes of partitions or overpartiitons is examined, bearing in…

Number Theory · Mathematics 2020-01-28 Andrew V. Sills

In 1918 S. Ramanujan defined a family of trigonometric sum now known as Ramanujan sums. In the last few years, Ramanujan sums have inspired the signal processing community. In this paper, we have defined an operator termed here as Ramanujan…

General Mathematics · Mathematics 2016-11-15 Devendra Kumar Yadav , Gajraj Kuldeep , S. D. Joshi

In this paper, we derive a unified generalization of Ramanujan's transformation identities for the theta function $f(a,b)$, originally appearing in Ramanujan's Notebooks, Parts~III and IV. Using an approach based on residue-class…

General Mathematics · Mathematics 2025-11-14 Mahipal Gurram

We provide an explicit description of two torsion points on the classical Bianchi elliptic quintic curve in terms of Ramanujan's functions. As a byproduct, we describe generators and defining equations of several modular function fields of…

Number Theory · Mathematics 2025-11-20 Masanobu Kaneko , Masato Kuwata

We establish the global $C^{1, \alpha}$-regularity for functions in solution classes, whenever ellipticity constants are sufficiently close. As an application, we derive the global regularity result concerning the parabolic normalized…

Analysis of PDEs · Mathematics 2023-04-18 Se-Chan Lee , Hyungsung Yun

We have derived long series expansions for the perimeter generating functions of the radius of gyration of various polygons with a convexity constraint. Using the series we numerically find simple (algebraic) exact solutions for the…

Statistical Mechanics · Physics 2009-11-11 Iwan Jensen

In this article we present certain formulas involving arithmetical functions. In the first part we study properties of sums and product formulas for general type of arithmetic functions. In the second part we apply these formulas to the…

General Mathematics · Mathematics 2018-08-21 Nikos Bagis

We prove three supercongruences for sums of Almkvist-Zudilin numbers, which confirm some conjectures of Zudilin and Z.-H. Sun. A typical example is the Ramanujan-type supercongruence: \begin{align*} \sum_{k=0}^{p-1}…

Number Theory · Mathematics 2020-08-18 Ji-Cai Liu

In this paper we present a conjecture on the construction of generalised elliptic units above number fields with exactly one complex place. These elliptic units obtained as values of multiple elliptic Gamma functions. These form a…

Number Theory · Mathematics 2026-01-21 Pierre L. L. Morain