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Nonlinear Boundary Value Problems [PDF]

open access: yesProceedings Mathematical Sciences, 1974
The differential equations investigated in earlier chapters have all been linear differential equations. The finite element discretisation of these equations yielded systems of linear algebraic equations that may be solved using established, robust and reliable linear algebra techniques.
Papageorgiou, Nikolaos S.   +1 more
  +8 more sources

On solvability of boundary value problem for a nonlinear Fredholm integro-differential equation [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
The paper proposes a constructive method to solve a nonlinear boundary value problem for a Fredholm integro-differential equation. Using D.S. Dzhumabaev parametrization method, the problem under consideration is transformed into an equivalent ...
A.T. Assanova   +3 more
doaj   +3 more sources

An Elliptic Boundary Value Problem with Fractional Nonlinearity [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2021
We investigate existence and uniqueness of solutions to second-order elliptic boundary value problems containing a power nonlinearity applied to a fractional Laplacian. We detect the critical power separating the existence from the non-existence regimes.
Nicola Abatangelo, Matteo Cozzi
openaire   +6 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

A singular nonlinear boundary value problem [PDF]

open access: yesPacific Journal of Mathematics, 1978
We show that the following nonlinear boundary-value problem has a positive solution: \[ \ddot{y}-y+yF(y^2,t)=0,y(0)=0=\lim_{t\to \infty}\,y(t),\dot{y}(0) \mathrm{ finite.} \] We assume that \(F\) is continuous for \(t>0\), \(y^2 \geq 0\); \(F>0\) for \(y^2 >0\); and \(\eta^{-\delta}F(\eta ,t)\) is strictly increasing in \(\eta\) for some \(\delta>0 ...
openaire   +3 more sources

On one nonlinear integral boundary value problem

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
We give a new approach for the investigation of existence and construction of an approximate solutions of nonlinear non-autonomous systems of ordinary differential equations under nonlinear integral boundary conditions.
Я. В. Варга
doaj   +1 more source

Classical Continuous Constraint Boundary Optimal Control Vector Problem for Triple Nonlinear Parabolic System

open access: yesAl-Mustansiriyah Journal of Science, 2023
In this paper, our purpose is to study the classical continuous constraints boundary optimal triple control vector problem dominating nonlinear triple parabolic boundary value problem.
Yasameen H. Rashid   +2 more
doaj   +1 more source

Monte Carlo solution of heat conductivity problems with quadratic nonlinearity on the boundary of domain [PDF]

open access: yesE3S Web of Conferences, 2023
In this work, we study the approach connected with branching Markov processes. Branching Markov random processes are created to solve boundary-value problems (BVR) with polynomial nonlinearities.
Rasulov Abdujabar   +2 more
doaj   +1 more source

A Counterexample in Nonlinear Boundary Value Problems [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
For the boundary value problem (1.1), (1.2) below where initial value problems of (1.1) are unique and exist on (a, b) it is known that global uniqueness on (a, b) implies global existence on (a, b) if fl6 =0. It is also known that this is false if 54 0 and a6-fy=0. It is shown here by example that this is also false if /3640 and a6-fy$O.
openaire   +2 more sources

Solution of a nonlinear heat transfer problem based on experimental data

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
The paper develops a method for solving nonlinear equations of heat conduction. Two-layer container complexes have been created, the side faces of which are thermally insulated so that the 1D heat equation can be used.
B. Rysbaiuly, S. D. Alpar
doaj   +1 more source

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