Results 21 to 30 of about 542,085 (334)

Generalised Dirichelt-to-Neumann map in time dependent domains [PDF]

open access: yes, 2012
We study the heat, linear Schrodinger and linear KdV equations in the domain l(t) < x < ∞, 0 < t < T, with prescribed initial and boundary conditions and with l(t) a given differentiable function.
Baratella   +11 more
core   +1 more source

Computation of semi-analytical solutions of fuzzy nonlinear integral equations

open access: yesAdvances in Difference Equations, 2020
In this article, we use a fuzzy number in its parametric form to solve a fuzzy nonlinear integral equation of the second kind in the crisp case. The main theme of this article is to find a semi-analytical solution of fuzzy nonlinear integral equations. A
Zia Ullah   +3 more
doaj   +1 more source

A Regularization of Fredholm type singular integral equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We present a method to regularize first and second kind integral equations of Fredholm type with singular kernel. By appropriate application of the Poincaré-Bertrand formula we change such integral equations into a second kind Fredholm's integral ...
N. Aliev, S. Mohammad Hosseini
doaj   +1 more source

Eigenvalues of integral operator of the singular integral equation for a thin tubular vibrator antenna

open access: yesФизика волновых процессов и радиотехнические системы, 2019
The singular integral equation of a thin tubular vibrator is considered. This paper analyzed the dependence of the eigenvalues of the integral operator of the singular integral equation on the frequency and geometric dimensions of the vibrator with the ...
D.P. Tabakov, A.G. Mayorov
doaj   +1 more source

On a New Class of Singular Integro-differential Equations

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
In this paper for a new class of model and non-model partial integro-differential equations with singularity in the kernel, we obtained integral representation of family of solutions by aid of arbitrary functions.
T.K. Yuldashev, S.K. Zarifzoda
doaj   +1 more source

A singular stochastic integral equation [PDF]

open access: yesProceedings of the American Mathematical Society, 1982
This note is devoted to the discussion of the stochastic differential equation X d X + Y d Y = 0 XdX + YdY = 0 , X X and Y Y being continuous local martingales. A method to construct solutions of this equation is given.
Nualart, David, Sanz, Marta
openaire   +4 more sources

Quarkonium bound-state problem in momentum space revisited [PDF]

open access: yes, 2006
A semi-spectral Chebyshev method for solving numerically singular integral equations is presented and applied in the quarkonium bound-state problem in momentum space.
Deloff, A.
core   +3 more sources

Productivity Formulae of an Infinite-conductivity Hydraulically Fractured Well Producing at Constant Wellbore Pressure Based on Numerical Solutions of a Weakly Singular Integral Equation of the First Kind

open access: yes, 2012
In order to increase productivity, it is important to study the performance of a hydraulically fractured well producing at constant wellbore pressure.
C. Hu, Jing Lu, Xiaoming He
semanticscholar   +1 more source

Space-time domain solutions of the wave equation by a non-singular boundary integral method and Fourier transform

open access: yes, 2017
The general space-time evolution of the scattering of an incident acoustic plane wave pulse by an arbitrary configuration of targets is treated by employing a recently developed non-singular boundary integral method to solve the Helmholtz equation in the
Chan, Derek Y. C.   +2 more
core   +1 more source

Problems with Missing Tricomi Condition and Analog of Frankl Condition for One Class of Mixed Type Equations

open access: yesMathematics
In this paper, for a mixed elliptic-hyperbolic type equation with various degeneration orders and singular coefficients, theorems of uniqueness and existence of the solution to the problem with a missing Tricomi condition on boundary characteristic and ...
Assel Makulbay   +3 more
doaj   +1 more source

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