Results 21 to 30 of about 4,398,040 (341)

Application of the method of stationary phase to weakly nonlinear hyperbolic systems asymptotic solving

open access: yesLietuvos Matematikos Rinkinys, 2004
Method of averaging of first order hyperbolic system with small parameter is presented. The mathe­matic investigate of this method is based on the method of stationary phase.
Aleksandras Krylovas
doaj   +3 more sources

Moving Front Solution of the Reaction-Diffusion Problem

open access: yesМоделирование и анализ информационных систем, 2017
In  this  paper,  we study  the  moving  front solution  of the  reaction-diffusion  initialboundary value problem  with a small diffusion coefficient. Problems  in such statements can be used to model physical processes associated  with the propagation ...
Evgeny A. Antipov   +3 more
doaj   +1 more source

Nonclassical Approximate Symmetries of Evolution Equations with a Small Parameter [PDF]

open access: yes, 2006
We introduce a method of approximate nonclassical Lie-B\"acklund symmetries for partial differential equations with a small parameter and discuss applications of this method to finding of approximate solutions both integrable and nonintegrable equations ...
Kordyukova, Svetlana
core   +4 more sources

Singularly perturbed linear oscillator with piecewise-constant argument

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2018
The Cauchy problem for singularly perturbed linear differential equation the second order with piecewise-constant argument is considered in the article.
M. U. Akhmet   +3 more
doaj   +1 more source

Inverse Problem for a Mixed Type Integro-Differential Equation with Fractional Order Caputo Operators and Spectral Parameters

open access: yesAxioms, 2020
The questions of the one-value solvability of an inverse boundary value problem for a mixed type integro-differential equation with Caputo operators of different fractional orders and spectral parameters are considered.
Tursun K. Yuldashev, Erkinjon T. Karimov
doaj   +1 more source

Exploring the vicinity of the Bogomol'nyi-Prasad-Sommerfield bound [PDF]

open access: yes, 2001
We investigate systems of real scalar fields in bidimensional spacetime, dealing with potentials that are small modifications of potentials that admit supersymmetric extensions.
Alonso Izquierdo A   +16 more
core   +2 more sources

Confidence regions for the multinomial parameter with small sample size [PDF]

open access: yes, 2008
Consider the observation of n iid realizations of an experiment with d>1 possible outcomes, which corresponds to a single observation of a multinomial distribution M(n,p) where p is an unknown discrete distribution on {1,...,d}. In many applications, the
Blyth C. R.   +3 more
core   +6 more sources

An asymptotic solution for the SIS epidemic model, taking into account migration and diffusion [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this work is to propose and investigate a simple and effective model of an epidemic in an animal population that takes into account migration along the plane of both diseased and healthy individuals. Within the framework of this model, the
Rassadin, Aleksandr Eduardovich
doaj   +1 more source

The Cauchy problem for singularly perturbed higher-order integro-differential equations

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2019
The article is devoted to research the Cauchy problem for singularly perturbed higher-order linear integro-differential equation with a small parameter at the highest derivatives, provided that the roots of additional characteristic equation have ...
A. E. Mirzakulova   +3 more
doaj   +1 more source

Construction of the solution of the boundary value problem for integro differential equation with a small parameter in highest derivatives

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2016
The article is devoted to the study analytical formula of solution of boundary value problem with initial jump for a linear integro-diferential equation of n + m order with a small parameter in the highest derivatives.
A.E. Mirzakulova, N. Atakhan
doaj   +1 more source

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