Results 11 to 20 of about 27,885 (268)

An optimal control problem for the systems with integral boundary conditions [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
In this paper, we consider an optimal control problem with a «pure», integral boundary condition. The Green’s function is constructed. Using contracting Banach mappings, a sufficient condition for the existence and uniqueness of a solution to one class ...
M.J. Mardanov, Y.A. Sharifov
doaj   +2 more sources

On the integration of the diffusion equation with boundary conditions. [PDF]

open access: yesTransactions of the American Mathematical Society, 1961
the initial-value problem is shown to have a unique positivity preserving solution; here an1= aiini, bn = bini (the ni being components of the outer normal to A), oa, r > 0, and a2 +r2 = 1. Solutions in the form of strongly continuous semi-groups of positive operators (see [4]) are obtained in the Lp spaces over A with weight factor e, 1 ?_ _ 2.
openaire   +2 more sources

Integral boundary conditions in phase field models

open access: yesComputers & Mathematics with Applications, 2023
Modeling the chemical, electric, and thermal transport as well as phase transitions and the accompanying mesoscale microstructure evolution within a material in an electronic device setting involves the solution of partial differential equations often with integral boundary conditions.
Xiaofeng Xu   +4 more
openaire   +3 more sources

On solvability of nonlinear boundary value problems with integral condition for the system of hyperbolic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
For system of hyperbolic equations of second order a nonlinear boundary value problem with integral condition is considered. By introducing new unknown functions the investigated problem is reduced to an equivalent problem involving one-parametered ...
Anar Assanova
doaj   +1 more source

Boundary conditions for two-dimensional integrable chains [PDF]

open access: yesPhysics Letters A, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gürel, B., Habibullin I.
openaire   +2 more sources

Reaction–diffusion equation with nonlocal boundary condition subject to PID-controlled bioreactor

open access: yesNonlinear Analysis, 2017
We study a system of two parabolic nonlinear reaction–diffusion equations subject to a nonlocal boundary condition. This system of nonlinear equations is used for mathematical modeling of biosensors and bioreactors.
Feliksas Ivanauskas   +3 more
doaj   +1 more source

Solution to a parabolic equation with integral type boundary condition

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
In this paper we study the existence, and continuous dependence of the solution ϑ=ϑ(x,t) on a Hölder space H2+γ,1+γ/2(Q¯τ)(Q¯τ=[0,1]×[0,τ ...
Ignacio Barradas   +1 more
doaj   +1 more source

INTEGRAL METHOD OF SOLVING HEAT-CONDUCTION PROBLEMS WITH THE SECOND-KIND BOUNDARY CONDITION. 1. BASIC STATEMENTS

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2018
On the basis of systems of identical equalities and integral boundary characteristics, a new algorithm of solving a boundary-value problem on the nonstationary heat conduction in a canonical body with boundary condition of the second kind has been ...
V. A. Kot
doaj   +1 more source

The Fucík spectrum for nonlocal BVP with Sturm–Liouville boundary condition

open access: yesNonlinear Analysis, 2014
Boundary value problem of the form x''=-μx++λx-, αx(0)+(1-α)x'(0)=0, ∫01 x(s)ds=0 is considered, where μ,λ∈ R and α∈ [0,1]. The explicit formulas for the spectrum of this problem are given and the spectra for some α values are constructed.
Natalija Sergejeva
doaj   +1 more source

Integrable open boundary conditions for XXC models [PDF]

open access: yesJournal of High Energy Physics, 1998
The XXC models are multistate generalizations of the well known spin 1/2 XXZ model. These integrable models share a common underlying su(2) structure. We derive integrable open boundary conditions for the hierarchy of conserved quantities of the XXC models .
Arnaudon, Daniel, Maassarani, Ziad
openaire   +2 more sources

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