Results 21 to 30 of about 2,630 (160)

Regularity for a Nonlinear Discontinuous Subelliptic System with Drift on the Heisenberg Group

open access: yesAdvances in Mathematical Physics, 2022
In this paper, we prove the partial Hölder regularity of weak solutions and the partial Morrey regularity to horizontal gradients of weak solutions to a nonlinear discontinuous subelliptic system with drift on the Heisenberg group by the A-harmonic ...
Junli Zhang, Jialin Wang
doaj   +1 more source

Bounds of Riesz Transforms on $L^p$ Spaces for Second Order Elliptic Operators [PDF]

open access: yes, 2004
For any fixed $p>2$, a necessary and sufficient condition is obtained for the boundedness of the Riesz transforms associated with second order elliptic operators with real, symmetric, bounded measurable coefficients.Comment: To appear in Annales de L ...
Shen, Zhongwei
core   +2 more sources

Regularity results for singular elliptic problems

open access: yesJournal of Function Spaces and Applications, 2006
Some local and global regularity results for solutions of linear elliptic equations in weighted spaces are proved. Here the leading coefficients are VMO functions, while the hypotheses on the other coefficients and the boundary conditions involve a ...
Loredana Caso
doaj   +1 more source

Recent progress in elliptic equations and systems of arbitrary order with rough coefficients in Lipschitz domains [PDF]

open access: yes, 2010
This is a survey of results mostly relating elliptic equations and systems of arbitrary even order with rough coefficients in Lipschitz graph domains.
Maz'ya, Vladimir, Shaposhnikova, Tatyana
core   +2 more sources

An existence result for elliptic equations with VMO-coefficients

open access: yesJournal of Mathematical Analysis and Applications, 2007
The paper deals with existence and uniqueness of solutions to the Dirichlet problem \[ \begin{cases} u\in W^{2,p}(\Omega)\cap W^{1,p}_0(\Omega),\cr Lu=f\in L^p(\Omega), \end{cases} \] with unbounded domain \(\Omega\subset \mathbb R^n,\) \(n\geq3,\) for the linear uniformly elliptic operator \[ L=-\sum_{i,j=1}^n a_{ij}{{\partial^2}\over{\partial x_i ...
CASO, Loredana   +2 more
openaire   +2 more sources

The Dirichlet Problem for elliptic equations in unbounded domains of the plane

open access: yesJournal of Function Spaces and Applications, 2008
In this paper we prove a uniqueness and existence theorem for the Dirichlet problem in W2,p for second order linear elliptic equations in unbounded domains of the plane.
Paola Cavaliere, Maria Transirico
doaj   +1 more source

Quasilinear elliptic equations with VMO coefficients [PDF]

open access: yesTransactions of the American Mathematical Society, 1995
Strong solvability and uniqueness in Sobolev space W 2 , n ( Ω ) {W^{2,n}}(\Omega ) are proved for the Dirichlet problem \[ { u =
openaire   +2 more sources

Hydrogen Bond‐Assisted PCET and Formation of WIII─OH in Bis(Dithiolene) Complex

open access: yesAngewandte Chemie, Volume 137, Issue 31, July 28, 2025.
The single crystal structure of complex [2Et3NH‐1] reveals hydrogen bonding at both W‐oxo and dithiolene‐S sites within the bis(dithiolene) WIV‐oxo complex. This finding provides critical evidence for dithiolene's involvement in proton reactions in high‐valent W‐oxo complexes.
Wonjung Lee   +9 more
wiley   +2 more sources

Partial regularity for parabolic systems with VMO-coefficients

open access: yesCommunications on Pure and Applied Analysis, 2021
The author studies the regularity properties of the solutions of the following parabolic system in divergence form \[ u_t-\mathrm{div} A(x,t,u,Du)=0 \qquad \text{ in } \Omega_T=\Omega\times(-T,0)) \] It is established a partial Hölder regularity result for the weak solutions imposing standard \(p\)-growth condition and ellipticity condition on the ...
openaire   +2 more sources

A comparison theorem for nonsmooth nonlinear operators

open access: yes, 2019
We prove a comparison theorem for super- and sub-solutions with non-vanishing gradients to semilinear PDEs provided a nonlinearity $f$ is $L^p$ function with $p > 1$.
Kozlov, Vladimir, Nazarov, Alexander
core   +1 more source

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