Results 1 to 10 of about 6,569 (144)

On nonnegative entire solutions of second-order semilinear elliptic systems

open access: yesElectronic Journal of Differential Equations, 2003
We consider the second-order semilinear elliptic system $$ Delta u_i=P_i(x)u_{i+1}^{alpha_i}quadhbox{in }mathbb{R}^N, quad i=1,2,dots,m $$ with nonnegative continuous functions $P_i$.
Tomomitsu Teramoto
doaj   +2 more sources

Hermite Fitted Block Integrator for Solving Second-Order Anisotropic Elliptic Type PDEs

open access: yesFractal and Fractional, 2022
A Hermite fitted block integrator (HFBI) for numerically solving second-order anisotropic elliptic partial differential equations (PDEs) was developed, analyzed, and implemented in this study.
Emmanuel Oluseye Adeyefa   +3 more
doaj   +1 more source

General solutions and applications of the coupled Drinfel’d–Sokolov–Wilson equation

open access: yesExamples and Counterexamples, 2023
We report a new batch of wave solutions for the coupled Drinfel’d–Sokolov–Wilson equation which represents a coupled system of nonlinear partial differential equations (NLPDEs).
Shreya Mitra   +2 more
doaj   +1 more source

Second Order Regularity for a Linear Elliptic System Having BMO Coefficients [PDF]

open access: yesMilan Journal of Mathematics, 2021
AbstractWe consider linear elliptic systems whose prototype is$$\begin{aligned} div \, \Lambda \left[ \,\exp (-|x|) - \log |x|\,\right] I \, Du = div \, F + g \text { in}\, B. \end{aligned}$$divΛexp(-|x|)-log|x|IDu=divF+ginB.HereBdenotes the unit ball of$$\mathbb {R}^n$$Rn, for$$n > 2$$n>2, centered in the origin,Iis the identity matrix,Fis a ...
Moscariello G., Pascale G.
openaire   +2 more sources

Optimal control in the boundary value problem for elliptic equations with degeneration

open access: yesМатематичні Студії, 2023
The problem of optimal control of the system described by the oblique derivative problem for the elliptic equation of the second order is studied. Cases of internal and boundary management are considered.
I. D. Pukal’skii, B. O. Yashan
doaj   +1 more source

Uniqueness theorem for partially observed elliptic systems and application to asymptotic synchronization

open access: yesComptes Rendus. Mathématique, 2020
We show that under Kalman’s rank condition, the observability of a scalar equation implies the uniqueness of solution to a system of elliptic operators.
Li, Tatsien, Rao, Bopeng
doaj   +1 more source

High-precision quantum algorithms for partial differential equations [PDF]

open access: yesQuantum, 2021
Quantum computers can produce a quantum encoding of the solution of a system of differential equations exponentially faster than a classical algorithm can produce an explicit description.
Andrew M. Childs   +2 more
doaj   +1 more source

On the generalized spectrum for second-order elliptic systems [PDF]

open access: yesTransactions of the American Mathematical Society, 1987
We consider the system of homogeneous Dirichlet boundary value problems ( ∗ ) ({\ast }) \[ L 1 u = λ [ a 11 ( x )
Cantrell, Robert Stephen, Cosner, Chris
openaire   +1 more source

On the Solution of the Dirichlet Problem for Second-Order Elliptic Systems in the Unit Disk

open access: yesMathematics, 2023
The role played by explicit formulas for solving boundary value problems for elliptic equations and systems is well known. In this paper, explicit formulas for a general solution of the Dirichlet problem for second-order elliptic systems in the unit disk
Astamur Bagapsh, Alexandre Soldatov
doaj   +1 more source

Exact method to solve of linear heat transfer problems [PDF]

open access: yesE3S Web of Conferences, 2021
When approximating multidimensional partial differential equations, the values of the grid functions from neighboring layers are taken from the previous time layer or approximation.
Abdullayev Akmaljon   +2 more
doaj   +1 more source

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