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A new family of sequences is proposed. An example of sequence of this family is more accurately studied. This sequence is composed by the integers $n$ for which the sum of binary digits is equal to the sum of binary digits of $n^2$. Some…

Number Theory · Mathematics 2007-05-23 Giuseppe Melfi

We first study some families of maximal real subfields of cyclotomic fields with even class number, and then explore the implications of large plus class numbers of cyclotomic fields. We also discuss capitulation of the minus part and the…

Number Theory · Mathematics 2012-02-28 Franz Lemmermeyer

The Whittaker function and its diverse extensions have been actively investigated. Here we introduce an extension of the Whittaker function by using the known extended confluent hypergeometric function $\Phi_{p,v}$ and investigate some of…

Classical Analysis and ODEs · Mathematics 2018-01-25 Gauhar Rahman , Kottakkaran Sooppy Nisar , Junesang Choi

Challenging the standard notion of totality in computable functions, one has that, given any sufficiently expressive formal axiomatic system, there are total functions that, although computable and "intuitively" understood as being total,…

Logic in Computer Science · Computer Science 2020-09-03 Felipe S. Abrahão , Klaus Wehmuth , Artur Ziviani

We consider the functional inverse of the Gamma function in the complex plane, where it is multi-valued, and define a set of suitable branches by proposing a natural extension from the real case.

Complex Variables · Mathematics 2023-11-29 David J. Jeffrey , Stephen M. Watt

We consider the expansion of the real field by the group of rational points of an elliptic curve over the rational numbers. We prove a completeness result, followed by a quantifier elimination result. Moreover we show that open sets…

Logic · Mathematics 2010-12-01 Ayhan Gunaydin , Philipp Hieronymi

In the context of the complex-analytic structure within the unit disk centered at the origin of the complex plane, that was presented in a previous paper, we show that a certain class of non-integrable real functions can be represented…

Complex Variables · Mathematics 2019-02-19 Jorge L. deLyra

We study the real components of modular curves. Our main result is an abstract group-theoretic description of the real components of a modular curve defined by a congruence subgroup of level N in terms of the corresponding subgroup of…

Number Theory · Mathematics 2011-08-17 Andrew Snowden

We show that the second central extension of the Galilei group in (2+1) dimensions corresponds to spin, which can be any real number.

High Energy Physics - Theory · Physics 2009-10-31 R. Jackiw , V. P. Nair

Some aspects of analysis involving fields with absolute value functions are discussed, which includes the real or complex numbers with their standard absolute values, as well as ultrametric situations like the p-adic numbers.

Classical Analysis and ODEs · Mathematics 2015-04-28 Stephen Semmes

Two approximations of the integral of a class of sinusoidal composite functions, for which an explicit form does not exist, are derived. Numerical experiments show that the proposed approximations yield an error that does not depend on the…

Numerical Analysis · Mathematics 2024-01-17 Alberto Costa

Motivated by extending the functional stochastic calculus, to important functionals to which it does not apply, a notion of functional derivative along a curve is introduced. This new setting is developed by incorporating path-dependent…

Probability · Mathematics 2026-04-14 Christian Houdré , Jorge Víquez

In this paper, we have studied first the idea of rough continuity of real valued functions of real variables and then we have discussed some important properties of rough continuity. Then we study the idea of rough $I$-continuity of real…

General Topology · Mathematics 2022-07-04 Amar Kumar Banerjee , Anirban Paul

We discuss the history and uses of the parallel census technique---an elegant tool in the study of certain computational objects having polynomially bounded census functions. A sequel will discuss advances (including Cai, Naik, and…

Computational Complexity · Computer Science 2007-05-23 Christian Glasser , Lane A. Hemaspaandra

We introduce a total order and the absolute value function for dual numbers. The absolute value function of dual numbers are with dual number values, and have properties similar to the properties of the absolute value function of real…

Rings and Algebras · Mathematics 2021-11-24 Liqun Qi , Chen Ling , Hong Yan

We classify finite dimensional division real associative $\mathcal{Z}_2$-algebras, introduce composition $\mathcal{Z}_2$-algebras, and extend the Campbell-Baker-Hausdorff series and Lie correspondence in the context of linear Hu-Liu Leibniz…

Rings and Algebras · Mathematics 2007-05-23 Keqin Liu

This paper examines the possibilities of extending Cantor's two arguments on the uncountable nature of the set of real numbers to one of its proper denumerable subsets: the set of rational numbers. The paper proves that, unless certain…

General Mathematics · Mathematics 2012-01-26 Antonio Leon

The classes of n-Wright-convex functions and n-Jensen-convex functions are compared with each other. It is shown that for any odd natural number $n$ the first one is the proper subclass of the second one. To reach this aim new tools…

Classical Analysis and ODEs · Mathematics 2012-01-20 Kazimierz Nikodem , Teresa Rajba , Szymon Wasowicz

Inspired by computer assisted proofs in analysis, we present an interval approach to real-number computations.

Logic in Computer Science · Computer Science 2018-04-16 Małgorzata Moczurad , Piotr Zgliczyński

In this article the notion of virtual double category (also known as fc-multicategory) is extended as follows. While cells in a virtual double category classically have a horizontal multi-source and single horizontal target, the notion of…

Category Theory · Mathematics 2025-03-04 Seerp Roald Koudenburg