Results 31 to 40 of about 566 (183)

Multiplicity and concentration behaviour of solutions for a fractional Choquard equation with critical growth

open access: yesAdvances in Nonlinear Analysis, 2020
In this paper, we study the singularly perturbed fractional Choquard ...
Yang Zhipeng, Zhao Fukun
doaj   +1 more source

Exponential Collocation Method for Solutions of Singularly Perturbed Delay Differential Equations

open access: yesAbstract and Applied Analysis, 2013
This paper deals with the singularly perturbed delay differential equations under boundary conditions. A numerical approximation based on the exponential functions is proposed to solve the singularly perturbed delay differential equations.
Şuayip Yüzbaşı, Mehmet Sezer
doaj   +1 more source

Asymptotic estimates of the solution of the boundary value problem for singularly perturbed integro-differential equations

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2020
The mathematical models of many processes in physics, astrophysics, chemistry, biology, mechanics and technology are differential and integro-differential equations containing small parameters at the highest derivatives.
M. Dauylbayev, N. Aviltay, B. Kadirbekov
doaj   +1 more source

On the Singularly Perturbed Matrix Differential Riccati Equation [PDF]

open access: yesProceedings of the 44th IEEE Conference on Decision and Control, 2006
In this paper, the finite-time optimal control problem for time-invariant linear singularly perturbed systems is considered. The reduced-order pure-slow and pure-fast matrix differential Riccati equations are obtained by decoupling the singularly perturbed differential matrix Riccati equation of dimension n 1 + n 2 into the regular differential matrix ...
Zoran Gajic   +2 more
openaire   +1 more source

The Asymptotics of Solutions of a Singularly Perturbed Equation with a of Fractional Turning Point

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2017
We develop the classical Vishik – Lyusternik – Vasil’eva – Imanaliev boundary-value method for constructing uniform asymptotic expansions of solutions of singularly perturbed equations with singular points.
D. A. Tursunov, K. G. Kozhobekov
doaj   +1 more source

A Class of Shock Wave Solution to Singularly Perturbed Nonlinear Time-Delay Evolution Equations

open access: yesShock and Vibration, 2020
Nonlinear singularly perturbed problem for time-delay evolution equation with two parameters is studied. Using the variables of the multiple scales method, homogeneous equilibrium method, and approximation expansion method from the singularly perturbed ...
Yi-Hu Feng, Lei Hou
doaj   +1 more source

Schwinger Equation as Singularly Perturbed Equation

open access: yes, 1995
16 pages, plain LaTex, no figures.
Rochev, V. E., Saponov, P. A.
openaire   +2 more sources

Robust numerical method for singularly perturbed differential equations with large delay

open access: yesDemonstratio Mathematica, 2021
In this paper, a singularly perturbed differential equation with a large delay is considered. The considered problem contains a large delay parameter on the reaction term. The solution of the problem exhibits the interior layer due to the delay parameter
Abdulla Murad Ibrahim   +2 more
doaj   +1 more source

On Singularly Perturbed Retarded Functional Differential Equations

open access: yesJournal of Differential Equations, 2001
Here, the singularly perturbed system is considered: \[ \dot x(t) =F(t,x_t,y_{t, \varepsilon}),\;x(t)\in \mathbb{R}^n,\quad \varepsilon\dot y(t)=g (t,x_t,y_{t, \varepsilon}),\;y(t)\in \mathbb{R}^m, \] with \(x_t(\theta) =x(t+\theta)\), \(y_{t,\varepsilon} (\theta)= y(t+\varepsilon \theta)\), \(\theta\in [-\tau,0]\).
Artstein, Zvi, Slemrod, Marshall
openaire   +2 more sources

Numerical Integration of a Class of Singularly Perturbed Delay Differential Equations with Small Shift

open access: yesInternational Journal of Differential Equations, 2012
We have presented a numerical integration method to solve a class of singularly perturbed delay differential equations with small shift. First, we have replaced the second-order singularly perturbed delay differential equation by an asymptotically ...
Gemechis File, Y. N. Reddy
doaj   +1 more source

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