Results 21 to 30 of about 4,706,970 (298)

On a General Functional Equation

open access: yesSymmetry
In this paper, we deal with a general functional equation in several variables. We prove the hyperstability of this equation in (m + 1)-normed spaces and describe its general solution in some special cases. In this way, we solve the problems posed by Ciepliński. The considered equation was introduced as a generalization of the equation characterizing n-
Anna Bahyrycz
openaire   +2 more sources

An Analytical and Numerical Detour for the Riemann Hypothesis

open access: yesInformation, 2021
From the functional equation F(s)=F(1−s) of Riemann’s zeta function, this article gives new insight into Hadamard’s product formula. The function S1(s)=d(lnF(s))/ds and its family of associated Sm functions, expressed as a sum of rational fractions, are ...
Michel Riguidel
doaj   +1 more source

Analytic embedding of pseudo-Helmholtz geometry [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021
For modern geometry, the study of maximal mobility geometries is of great importance. Some of these geometries are well studied (Euclidean, pseudo-Euclidean, symplectic, spherical, Lobachevsky, etc.), and others are poorly understood (Helmholtz, pseudo ...
Kyrov, Vladimir A.
doaj   +1 more source

On the almost sure running maxima of solutions of affine stochastic functional differential equations [PDF]

open access: yes, 2010
This paper studies the large fluctuations of solutions of scalar and finite-dimensional affine stochastic functional differential equations with finite memory as well as related nonlinear equations.
Wu, H., Appleby, John A.D., Mao, Xuerong
core   +4 more sources

A Functional Equation with Biadditive Functions

open access: yesAnnales Mathematicae Silesianae, 2022
Abstract Let S , H , X be groups. For two given biadditive functions A : S 2 →
openaire   +5 more sources

The Role of Riemann’s Zeta Function in Mathematics and Physics †,‡

open access: yesUniverse, 2019
In particular, Riemann’s impact on mathematics and physics alike is demonstrated using methods originating from the theory of numbers and from quantum electrodynamics, i.e., from the behavior of an electron in a prescribed external electromagnetic ...
Walter Dittrich
doaj   +1 more source

On a “square” functional equation [PDF]

open access: yesPacific Journal of Mathematics, 1974
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On Cauchy’s functional equation [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
for real-valued functions of a real variable. P. Erdos [2] asked, after learning about a preliminary result of S. Hartman [3], whether one obtains all functions satisfying (C) for almost all pairs (x, y) by simply redefining the functions satisfying (C) for all (x, y) in an arbitrary manner on sets of measure zero.
openaire   +2 more sources

Discrete Integrals Based on Comonotonic Modularity

open access: yesAxioms, 2013
It is known that several discrete integrals, including the Choquet and Sugeno integrals, as well as some of their generalizations, are comonotonically modular functions.
Jean-Luc Marichal, Miguel Couceiro
doaj   +1 more source

On the stability of a multiplicative type sum form functional equation

open access: yesRatio Mathematica, 2021
In this paper we intend to discuss the stability of a sum form functional equation \begin{align*} \sum\limits\limits^n_{i=1}\sum\limits\limits^m_{j=1}f\left(p_iq_j\right)=\sum\limits\limits^n_{i=1}k\left(p_i\right)\sum\limits\limits^m_{j=1}q^{\beta }_j ...
Surbhi Madan   +2 more
doaj   +1 more source

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