Results 1 to 10 of about 617,396 (323)

A priori estimates for the complex Hessian equations [PDF]

open access: yesAnalysis & PDE, 2011
We prove some $L^{\infty}$ a priori estimates as well as existence and stability theorems for the weak solutions of the complex Hessian equations in domains of $C^n$ and on compact K\"ahler manifolds.
Błocki, Gårding, Kołodziej
core   +4 more sources

A Priori Estimates or Elliptic Systems

open access: bronzeZeitschrift für Analysis und ihre Anwendungen, 1987
A priori estimates for the general complex Beltrami equation in connection with Riemann–Hilbert boundary conditions are developed, which can be used for existence as well as uniqueness statements for related nonlinear problems. For this reason the equation together with the boundary conditions are transformed into the canonical form and essentially a ...
Heinrich Begehr, George C. Hsiao
openalex   +4 more sources

New anisotropic a priori error estimates

open access: greenNumerische Mathematik, 2001
We prove a priori anisotropic estimates for the $L^2$ and $H^1$ interpolation error on linear finite elements. The full information about the mapping from a reference element is employed to separate the contribution to the elemental error coming from different directions. This new
Luca Formaggia, Simona Perotto
openalex   +4 more sources

A priori estimates of solutions to nonlinear fractional Laplacian equation

open access: yesElectronic Research Archive, 2023
In this paper, we focus on the research of a priori estimates of several types of semi-linear fractional Laplacian equations with a critical Sobolev exponent.
Tao Zhang , Tingzhi Cheng
doaj   +1 more source

Existence results and a priori estimates for solutions of quasilinear problems with gradient terms [PDF]

open access: yesOpuscula Mathematica, 2019
In this paper we establish a priori estimates and then an existence theorem of positive solutions for a Dirichlet problem on a bounded smooth domain in \(\mathbb{R}^N\) with a nonlinearity involving gradient terms.
Roberta Filippucci, Chiara Lini
doaj   +1 more source

Variational Formulation and A Priori Estimates for the Galerkin Method for a Fractional Diffusion Equation

open access: yesTrends in Computational and Applied Mathematics, 2022
In this work we obtain a variational formulation and {\it a priori} estimates for approximate solutions of a problem involving fractional diffusion equations.
M. E. de S. Lima   +2 more
doaj   +1 more source

On a boundary value problem for a Boussinesq-type equation in a triangle

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
Earlier, we considered an initial-boundary value problem for a one-dimensional Boussinesq-type equation in a domain that is a trapezoid, in which the theorems on its unique weak solvability in Sobolev classes were established by the methods of the theory
M. T. Jenaliyev   +2 more
doaj   +1 more source

Compliance estimates for two-dimensionalproblems with Dirichlet region of prescribed length

open access: yesNetworks and Heterogeneous Media, 2012
In this paper we prove some lower bounds for the compliancefunctional, in terms of the $1$-dimensional Hausdorff measureof the Dirichlet region and the number of its connectedcomponents.
Paolo Tilli
doaj   +1 more source

A priori estimates of global solutions of superlinear parabolic systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We consider the parabolic system $ u_{t}-\Delta u = u^{r}v^{p}$, $v_{t}-\Delta v = u^{q}v^{s}$ in $\Omega\times(0,\infty)$, complemented by the homogeneous Dirichlet boundary conditions and the initial conditions $(u,v)(\cdot,0) = (u_{0},v_{0})$ in ...
Július Pačuta
doaj   +1 more source

A priori estimates for Donaldson's equation over compact Hermitian manifolds [PDF]

open access: yes, 2013
In this paper we prove a priori estimates for Donaldson's equation $\omega\wedge(\chi+\sqrt{-1}\partial\bar{\partial}\varphi)^{n-1}=e^{F}(\chi+\sqrt{-1}\partial\bar{\partial}\varphi)^{n}$ over a compact Hermitian manifold X of complex dimension n, where $
Li, Yi
core   +3 more sources

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