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The goal of this paper is to formalize the notion of The Compositional Integral in The Complex Plane. We prove a convergence theorem guaranteeing its existence. We prove an analogue of Cauchy's Integral Theorem--and suggest an approach at…

General Mathematics · Mathematics 2020-11-03 James David Nixon

A remarkable result from integral geometry is Cauchy's formula, which relates the mean path length of ballistic trajectories randomly crossing a convex 2D domain, to the ratio between the region area and its perimeter. This theorem has been…

Mathematical Physics · Physics 2022-01-19 Samuel Hidalgo-Caballero , Alvaro Cassinelli , Matthieu Labousse , Emmanuel Fort

Given a solution of a semilinear dispersive partial differential equation with a real analytic nonlinearity, we relate its Cauchy data at two different times by nonlinear representation formulas in terms of convergent series. These series…

Analysis of PDEs · Mathematics 2013-11-05 Frédéric Hélein

We define a deterministic integral with respect to irregular paths as a limit of standard line integrals and completely describe a class of all paths for which this integral exists for functions with H\"older exponent in the range of (0,1].…

Classical Analysis and ODEs · Mathematics 2023-09-13 Yevgeniy Guseynov

The continuum has been one of the most controversial topics in mathematics since the time of the Greeks. Some mathematicians, such as Euclid and Cantor, held the position that a line is composed of points, while others, like Aristotle, Weyl…

History and Overview · Mathematics 2025-08-13 Mohammad Ardeshir , Rasoul Ramezanian

A very small amount of K\"ahler algebra (i.e. Clifford algebra of differential forms) in the real plane makes x + ydxdy emerge as a factor between the differentials of the Cartesian and polar coordinates, largely replacing the concept of…

General Mathematics · Mathematics 2012-05-22 Jose G. Vargas

A history of two Rolle Theorems, about the root of derivative and about root interval from 1690 till the end of XIX century.

History and Overview · Mathematics 2015-03-12 Galina Sinkevich

It is known that the Eulerian and Lagrangian structures of fluid flow can be drastically different; for example, ideal fluid flow can have a trivial (static) Eulerian structure, while displaying chaotic streamlines. Here we show that ideal…

Analysis of PDEs · Mathematics 2015-01-19 Vladislav Zheligovsky , Uriel Frisch

In the paper, the authors analytically generalize the Catalan numbers in combinatorial number theory, establish an integral representation of the analytic generalization of the Catalan numbers by virtue of Cauchy's integral formula in the…

Combinatorics · Mathematics 2023-04-18 Wen-Hui Li , Jian Cao , Da-Wei Niu , Jiao-Lian Zhao , Feng Qi

The notion of pairable functions is introduced and some of its properties are developed. In this connection the famous Euler identity is interpreted as a property of certain pairable functions and finite cyclic groups.

General Mathematics · Mathematics 2021-10-28 Martin Himmel

Cauchy's contribution to the foundations of analysis is often viewed through the lens of developments that occurred some decades later, namely the formalisation of analysis on the basis of the epsilon-delta doctrine in the context of an…

History and Overview · Mathematics 2012-10-17 Alexandre Borovik , Mikhail G. Katz

It has been known for some time that a 3D incompressible Euler flow that has initially a barely smooth velocity field nonetheless has Lagrangian fluid particle trajectories that are analytic in time for at least a finite time (Ph. Serfati…

Analysis of PDEs · Mathematics 2015-01-19 U. Frisch , V. Zheligovsky

Mathematical understanding is built in many ways. Among these, illustration has been a companion and tool for research for as long as research has taken place. We use the term illustration to encompass any way one might bring a mathematical…

History and Overview · Mathematics 2023-12-29 Rémi Coulon , Gabriel Dorfsman-Hopkins , Edmund Harriss , Martin Skrodzki , Katherine E. Stange , Glen Whitney

We revisit a family of integrals that delude intuition, and that recently appeared in mathematical literature in connection with computer algebra package verification. We show that the remarkable properties displayed by these integrals…

Statistical Mechanics · Physics 2019-08-26 S. N. Majumdar , E. Trizac

Real quadric curves are often referred to as "conic sections," implying that they can be realized as plane sections of circular cones. However, it seems that the details of this equivalence have been partially forgotten by the mathematical…

History and Overview · Mathematics 2018-01-12 Drew Armstrong

In [1], an operator was introduced which acts parallel to the Riemann-Liouville differintegral on a transformation of the space of real analytic functions and commutes with itself. This paper aims to extend the technique - and its defining…

Classical Analysis and ODEs · Mathematics 2012-07-31 Matthew Parker

Two prized papers, one by Augustin Cauchy in 1815, presented to the French Academy and the other by Hermann Hankel in 1861, presented to G\"ottingen University, contain major discoveries on vorticity dynamics whose impact is now quickly…

History and Overview · Mathematics 2014-09-29 Uriel Frisch , Barbara Villone

The Airy integral is a well-known contour integral solution of Airy's equation which has several applications and which has been used for mathematical illustrations due to its interesting properties. We present and derive properties of two…

Complex Variables · Mathematics 2020-09-18 Gary G. Gundersen , Janne M. Heittokangas , Zhi-Tao Wen

In this article, we explore a series of elementary yet insightful results involving integrals related to Gaussian sums. Using techniques rooted in classical calculus, we derive several identities and evaluate nontrivial definite integrals…

General Mathematics · Mathematics 2025-07-25 Jesus Retamozo

Differential lambda-calculus was first introduced by Thomas Ehrhard and Laurent Regnier in 2003. Despite more than 15 years of history, little work has been done on a differential calculus with integration. In this paper, we shall propose a…

Programming Languages · Computer Science 2021-05-10 Han Xu , Zhenjiang Hu