Results 11 to 20 of about 8,944,209 (378)

Functional tetrahedron equation [PDF]

open access: yesTheoretical and Mathematical Physics, 1998
LaTeX, 16 ...
Igor G. Korepanov   +2 more
openaire   +5 more sources

On a solution to a functional equation [PDF]

open access: yesJournal of Applied Analysis, 2021
Abstract We offer a solution to a functional equation using properties of the Mellin transform. A new criteria for the Riemann Hypothesis is offered as an application of our main result, through a functional relationship with the Riemann xi function.
Patkowski, Alexander E
openaire   +4 more sources

Functional equations and martingales [PDF]

open access: yesAequationes mathematicae, 2021
We consider functional equations (Cauchy's, Abel's and some other functional equations) and show that to find general solution of these equations is equivalent to establish that a space-transformation of a Brownian Motion by suitable function (or functions) is a martingale.
M. Mania, L. Tikanadze
openaire   +3 more sources

On Ulam Stability of a Functional Equation

open access: yesResults in Mathematics, 2020
In this note, we study the Ulam stability of a functional equation both in Banach and m-Banach spaces. Particular cases of this equation are, among others, equations which characterize multi-additive and multi-Jensen functions.
K. Ciepliński
semanticscholar   +1 more source

On extension of solutions of a simultaneous system of iterative functional equations [PDF]

open access: yesOpuscula Mathematica, 2009
Some sufficient conditions which allow to extend every local solution of a simultaneous system of equations in a single variable of the form \[ \varphi(x) = h (x, \varphi[f_1(x)],\ldots,\varphi[f_m(x)]),\] \[\varphi(x) = H (x, \varphi[F_1(x)],\ldots ...
Janusz Matkowski
doaj   +1 more source

On Two Problems Related to Divisibility Properties of z(n)

open access: yesMathematics, 2021
The order of appearance (in the Fibonacci sequence) function z:Z≥1→Z≥1 is an arithmetic function defined for a positive integer n as z(n)=min{k≥1:Fk≡0(modn)}. A topic of great interest is to study the Diophantine properties of this function. In 1992, Sun
Pavel Trojovský
doaj   +1 more source

A functional RG equation for the c-function [PDF]

open access: yesJournal of High Energy Physics, 2014
After showing how to prove the integrated c-theorem within the functional RG framework based on the effective average action, we derive an exact RG flow equation for Zamolodchikov's c-function in two dimensions by relating it to the flow of the effective average action.
Codello A, D'Odorico G, Pagani C
openaire   +6 more sources

Mahgoub transform and Hyers-Ulam stability of nth order linear differential equations

open access: yesAIMS Mathematics, 2022
The main aim of this paper is to investigate various types of Hyers-Ulam stability of linear differential equations of $ n^{th} $ order with constant coefficients using the Mahgoub transform method.
S. Deepa   +5 more
doaj   +1 more source

On the Stability of the Linear Functional Equation.

open access: yesProceedings of the National Academy of Sciences of the United States of America, 1941
theory of q-difference equations to a comparable degree of completeness. This program includes in particular the complete theory of the convergence and divergence of formal series, the explicit determination of the essential transcendental invariants ...
D. H. Hyers
semanticscholar   +1 more source

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

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