Results 11 to 20 of about 21,785,520 (294)

Weighted positivity of second order elliptic systems

open access: yesPotential Analysis, 2007
Integral inequalities that concern the weighted positivity of a differential operator have important applications in qualitative theory of elliptic boundary value problems.
Luo, Gou,, Maz´ya, Vladimir G.,
core   +2 more sources

Higher-order finite-difference methods for partial differential equations [PDF]

open access: yes, 1997
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis develops two families of numerical methods, based upon rational approximations having distinct real poles, for solving first- and second-order ...
Cheema, Tasleem Akhter
core   +7 more sources

Higher order parallel splitting methods for parabolic partial differential equations [PDF]

open access: yes, 1995
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis develops two families of numerical methods, based upon new rational approximations to the matrix exponential function, for solving second-order ...
Taj, Malik Shahadat Ali
core   +7 more sources

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 ( ∗
Cantrell, Robert Stephen, Cosner, Chris
openaire   +1 more source

Discontinuous Galerkin Finite Element Approximation of Nonlinear Second-Order Elliptic and Hyperbolic Systems [PDF]

open access: yes, 2006
We develop the convergence analysis of discontinuous Galerkin finite element approximations to second-order quasilinear elliptic and hyperbolic systems of partial differential equations of the form, respectively, $-\sum_{\alpha=1}^d \partial_{x_\alpha ...
Suli, Endre   +5 more
core   +1 more source

The p-ellipticity condition for second order elliptic systems and applications to the Lamé and homogenization problems

open access: yesJournal of Differential Equations, 2021
The notion of $p$-ellipticity has recently played a significant role in improving our understanding of issues of solvability of boundary value problems for scalar complex valued elliptic PDEs. In particular, the presence of $p$-ellipticity ensures higher regularity of solutions of such equations.
Martin Dindoš, Jungang Li, Jill Pipher
openaire   +2 more sources

NONTRIVIAL RADIAL SOLUTIONS FOR A SYSTEM OF SECOND ORDER ELLIPTIC EQUATIONS

open access: yesJournal of Applied Analysis & Computation, 2022
Summary: In this paper we use the topological degree and the Krein-Rutman theorem to investigate the existence of nontrivial radial solutions for a system of second order elliptic equations. Our results are obtained under some conditions involving the eigenvalues of a relevant linear operator.
Zhang, Haiyan, Xu, Jiafa, O'Regan, Donal
openaire   +2 more sources

On energy functionals for second order elliptic systems with constant coefficients

open access: yesUfa Mathematical Journal, 2022
12 ...
Astamur Olegovich Bagapsh   +1 more
openaire   +2 more sources

On the regularity up to the boundary for second order nonlinear elliptic systems [PDF]

open access: yesPacific Journal of Mathematics, 1982
In several earlier papers, the first two authors have shown that the question of interior regularity for solutions of boundary value problems for second-order nonlinear elliptic systems is equivalent (in some sense) to a certain Liouville property. The present paper demonstrates that a similar result is true for regularity up to the boundary of the ...
Giaquinta, M.   +3 more
openaire   +4 more sources

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

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