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In this expository note, we revisit several classical arithmetic functions - namely Euler's totient function, the divisor sum functions and Dedekind's $\psi$-function - within a unifying algebraic framework that highlights their connections…

Number Theory · Mathematics 2025-05-02 Andrew Kobin

We apply Minkowski functionals and various derived measures to decipher the morphological properties of large-scale structure seen in simulations of gravitational evolution. Minkowski functionals of isodensity contours serve as tools to…

Generalised definitions of exponential, trigonometric sine and cosine and hyperbolic sine and cosine functions are given. In the lowest order, these functions correspond to ordinary exponential, trigonometric sine etc. Some of the…

Mathematical Physics · Physics 2007-05-23 Debasis Biswas , S. Biswas , Asoke P. Chattopadhyay

This note presents some of the results obtained in arXiv:2207.05410 and it has beenthe object of a talk of the second author during the Journ\'ees "\'Equations auxD\'eriv\'ees Partielles" (Obernai, june 2022). We study properties of…

Analysis of PDEs · Mathematics 2023-02-10 Nguyen Viet Dang , Matthieu Léautaud , Gabriel Rivière

We consider the family of CIFSs of generalized complex continued fractions with a complex parameter space. This is a new interesting example to which we can apply a general theory of infinite CIFSs and analytic families of infinite CIFSs.…

Dynamical Systems · Mathematics 2020-02-27 Kanji Inui , Hikaru Okada , Hiroki Sumi

Isotropic functions of positions $\hat{\bf r}_1, \hat{\bf r}_2,\ldots, \hat{\bf r}_N$, i.e. functions invariant under simultaneous rotations of all the coordinates, are conveniently formed using spherical harmonics and Clebsch-Gordan…

Cosmology and Nongalactic Astrophysics · Physics 2023-08-02 Robert N. Cahn , Zachary Slepian

We examine Bourbaki's function, an easily-constructed continuous but nowhere-differentiable function, and explore properties including functional identities, the antiderivative, and the box and Hausdorff dimensions of the graph.

Functional Analysis · Mathematics 2016-02-04 Joey McCollum

We prove that certain functions involving ratios of Gamma functions and the Psi-function belong to generalized Bernstein classes and new properties of generalized Bernstein functions are given.

Classical Analysis and ODEs · Mathematics 2025-07-08 Stamatis Koumandos , Henrik L. Pedersen

In this paper, we give global expressions of geodesics and isoparametric functions on a Randers sphere by navigation. We obtain isoparametric families and focal submanifolds in (S^{n}; F; d\mu_{BH}) by Cartan-M\"unzner polynomials. Further…

Differential Geometry · Mathematics 2022-05-18 Yali Chen , Qun He

We evaluate certain multidimensional integrals in terms of the Lerch transcendent function $\Phi$, generalizing Guillera-Sondow's formulas. As an application, we get new representations of classical constants like Euler's constant $\gamma$…

Number Theory · Mathematics 2007-05-23 Sergey Zlobin

In this paper, we introduce a new two-parameter deformation of the Gamma function that generalizes some existing Gamma-type functions in the literature. We study properties of this function that depend on the parameters. We also prove some…

Classical Analysis and ODEs · Mathematics 2025-10-10 Anton Asare-Tuah , Emmanuel Djabang , Eyram A. K. Schwinger , Benoit F. Sehba , Ralph A. Twum

In this paper, we introduce and investigate the notions of Mean Dimension and Metric Mean Dimension for generalized iterated function systems (IFS). We establish basic properties of these invariants and prove that Mean Dimension is always…

Dynamical Systems · Mathematics 2026-04-15 Welington Cordeiro , Maria José Pacifico , Xuan Zhang

This is the second part in a series of two papers. Here, we give an overview on the dimension theory of some dynamically defined function graphs, like Takagi and Weierstrass function, and we study the dimension of Markovian fractal…

Dynamical Systems · Mathematics 2019-01-15 Balázs Bárány , Michał\ Rams , Károly Simon

In this paper our aim is to find the radii of $\gamma$-Spirallike of order $\alpha$ and convex $\gamma$-Spirallike of order $\alpha$ for three different kinds of normalizations of the function…

Complex Variables · Mathematics 2022-11-24 Sercan Kazımoğlu , Kamaljeet Gangania

This is author's Habilitation Thesis (Dr. Sci. dissertation) submitted at the beginning of September 2004. It is written in Russian and is posted due to the continuing requests for the manuscript. The content: 1. Introduction, 2. Nonlinear…

Classical Analysis and ODEs · Mathematics 2016-10-06 V. P. Spiridonov

Generalized eigenfunctions of the two-dimensional relativistic Schr\"odinger operator $H=\sqrt{-\Delta}+V(x)$ with $|V(x)|\leq C< x>^{-\sigma}$, $\sigma>3/2$, are considered. We compute the integral kernels of the boundary values…

Spectral Theory · Mathematics 2008-08-27 Tomio Umeda , Dabi Wei

In this paper, we introduce the notion of generalized squeezing function and study the basic properties of generalized squeezing functions and Fridman invariants. We also study the comparison of these two invariants, in terms of the…

Complex Variables · Mathematics 2021-11-10 Feng Rong , Shichao Yang

This paper addresses problems in functional metric geometry that arise in the study of data such as signals recorded on geometric domains or on the nodes of weighted networks. Datasets comprising such objects arise in many domains of…

Metric Geometry · Mathematics 2022-11-18 Soheil Anbouhi , Washington Mio , Osman Berat Okutan

The main object of this paper is to present generalizations of gamma, beta and hypergeometric functions. Some recurrence relations, transformation formulas, operation formulas and integral representations are obtained for these new…

Classical Analysis and ODEs · Mathematics 2021-03-16 Enes Ata

This is the second part of our study of the dimension theory of $C^1$ iterated function systems (IFSs) and repellers on ${\Bbb R}^d$. In the first part we proved that the upper box-counting dimension of the attractor of any $C^1$ IFS on…

Dynamical Systems · Mathematics 2021-09-06 De-Jun Feng , Károly Simon