Results 21 to 30 of about 1,283,580 (337)

A Multilevel Iteration Method for Solving a Coupled Integral Equation Model in Image Restoration

open access: yesMathematics, 2020
The problem of out-of-focus image restoration can be modeled as an ill-posed integral equation, which can be regularized as a second kind of equation using the Tikhonov method.
Hongqi Yang, Bing Zhou
doaj   +1 more source

INTEGRATION OF PARTIALLY INTEGRABLE EQUATIONS [PDF]

open access: yesWaves and Stability in Continuous Media, 2006
12 p, WASCOM XIII (Acireale, 19-25 June 2005)
openaire   +4 more sources

Application of DRBEM for 2D sine-Gordon equation

open access: yesJournal of Taibah University for Science, 2021
This research paper introduces an application of dual reciprocity boundary element method (DRBEM) for the solution of sine-Gordon equation (SGE) in two-space dimension. Initially, the time derivatives are expanded using central difference schemes.
Nagehan Alsoy-Akgün
doaj   +1 more source

General functional-integral Volterra equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
We research the one-valued solvability of the integral Volterra equation of general type with given initial condition. The theorem on the existence and uniqueness of continuous solution, which satisfies the Lipschitz condition on the considered interval ...
T. K. Yuldashev, Zh. A. Artykova
doaj   +1 more source

Numerical solution of the color superconductivity gap in a weak coupling constant [PDF]

open access: yes, 2002
We present the numerical solution of the full gap equation in a weak coupling constant $g$. It is found that the standard approximations to derive the gap equation to the leading order of coupling constant are essential for a secure numerical evaluation ...
B. Barrois   +14 more
core   +2 more sources

Chandrasekhar quadratic and cubic integral equations via Volterra-Stieltjes quadratic integral equation

open access: yesDemonstratio Mathematica, 2021
In this work, we study the existence of one and exactly one solution x∈C[0,1]x\in C\left[0,1], for a delay quadratic integral equation of Volterra-Stieltjes type.
El-Sayed Ahmed M. A., Omar Yasmin M. Y.
doaj   +1 more source

An Integral Equation Involving Legendre Functions [PDF]

open access: yes, 1964
Rodrigues’s formula can be applied also to (1.1) and (1.3) but here the situation is slightly more involved in that the integrals with respect to σ^2 are of fractional order and their inversion requires the knowledge of differentiation and integration of
Erdélyi, A.
core   +1 more source

Analysis of Two-Dimensional Heat Transfer Problem Using the Boundary Integral Equation

open access: yesAdvances in Mathematical Physics, 2022
In this paper, we examine the problem of two-dimensional heat equations with certain initial and boundary conditions being considered. In a two-dimensional heat transport problem, the boundary integral equation technique was applied.
Nimona Ketema Kebeba, Gizaw Debito Haifo
doaj   +1 more source

Integral equation mei applied to three-dimensional arbitrary surfaces [PDF]

open access: yes, 1997
The authors present a new formulation of the integral equation of the measured equation of invariance (MEI) as a confined field integral equation discretised by the method of moments, in which the use of numerically derived testing functions results in ...
Mosig, J R   +3 more
core   +2 more sources

Contractions of Integrable Equations [PDF]

open access: yesInternational Journal of Modern Physics A, 1997
The contraction is applied to obtaining of integrable systems associated with nonsemisimple algebras. The effect of contraction is splitting off some components from initial system without loss of integrability.
V. V. Kuratov   +2 more
openaire   +3 more sources

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