Results 11 to 20 of about 406,386 (293)

Monotonic solutions of functional integral and differential equations of fractional order [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
The existence of positive monotonic solutions, in the class of continuous functions, for some nonlinear quadratic integral equations have been studied by J. Banas. Here we are concerned with a singular quadratic functional integral equations.
Ahmed El-Sayed, H. H. G. Hashem
doaj   +4 more sources

On the existence of solutions of some non-linear functional integral equations in Banach algebra with applications

open access: yesArab Journal of Basic and Applied Sciences, 2020
In this article, we establish some results for the existence of solution of nonlinear functional integral equations by using Darbo’s fixed point theorem in Banach algebra.
Amar Deep, Deepmala, Cemil Tunç
doaj   +2 more sources

Periodic solutions for an impulsive system of integro-differential equations with maxima [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
A periodical boundary value problem for a first-order system of ordinary integro-differential equations with impulsive effects and maxima is investigated.
Tursun K. Yuldashev
doaj   +1 more source

Solvability of functional quadratic integral equations with perturbation [PDF]

open access: yesOpuscula Mathematica, 2013
We study the existence of solutions of the functional quadratic integral equation with a perturbation term in the space of Lebesgue integrable functions on an unbounded interval by using the Krasnoselskii fixed point theory and the measure of weak ...
Mohamed M. A. Metwali
doaj   +1 more source

On a Functional Integral Equation [PDF]

open access: yesSymmetry, 2021
In this paper, we establish some results for a Volterra–Hammerstein integral equation with modified arguments: existence and uniqueness, integral inequalities, monotony and Ulam-Hyers-Rassias stability. We emphasize that many problems from the domain of symmetry are modeled by differential and integral equations and those are approached in the ...
Daniela Marian   +2 more
openaire   +1 more source

Coupled measure of noncompactness and functional integral equations

open access: yesOpen Mathematics, 2022
The aim of this article is to study the results of the fixed-point in coupled and tripled measure of noncompactness (MNC). We will use the technique of MNC for coupled and tripled MNC.
Hosseinzadeh Hasan   +3 more
doaj   +1 more source

Integrable functional equations and algebraic geometry [PDF]

open access: yesDuke Mathematical Journal, 1994
The authors offer the measurable solutions of the functional equation \[ q(x,y) q(y,z) = q(x,z) (r(x,y) - r(y,z)) + p(x,z). \] It turns out that they depend only upon the differences of their variables (and are thus related to integrable many-body problems, cf. \textit{F. Caligero}, Lett.
Dubrovin, Boris   +2 more
openaire   +5 more sources

Axiomatizations of signed discrete Choquet integrals [PDF]

open access: yes, 2010
We study the so-called signed discrete Choquet integral (also called non-monotonic discrete Choquet integral) regarded as the Lov\'asz extension of a pseudo-Boolean function which vanishes at the origin.
Cardin, Marta   +3 more
core   +4 more sources

Path Integral Solution of Linear Second Order Partial Differential Equations I. The General Construction [PDF]

open access: yes, 2004
A path integral is presented that solves a general class of linear second order partial differential equations with Dirichlet/Neumann boundary conditions. Elementary kernels are constructed for both Dirichlet and Neumann boundary conditions.
Abraham   +16 more
core   +2 more sources

Exact solution to a class of functional difference equations with application to a moving contact line flow [PDF]

open access: yes, 1994
A new integral representation for the Barnes double gamma function is derived. This is canonical in the sense that solutions to a class of functional difference equations of first order with trigonometrical coefficients can be expressed in terms of the ...
King, AC, Lawrie, JB
core   +1 more source

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