Results 121 to 130 of about 1,651 (223)

Integrability of derivations of classical solutions of Dirichlet's problem for an elliptic equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
The present work is concerned with integrability properties of derivatives of classical solutions of Dirichlet's problem for a linear second-order elliptic equation Lu=f.
M. I. Hassan
doaj   +1 more source

The imbedding theorems for weighted Sobolev spaces II

open access: yesBulletin of the Faculty of Science, Ibaraki University. Series A, Mathematics, 1991
The author discusses weighted Poincaré and Sobolev inequalities, where the weight is of the form \(\operatorname{dist}(x,F)^\alpha\) for some closed set \(F\) in \(\mathbb{R}^n\). The behavior of the tubular neighborhoods of \(F\) determine the admissibility of the weight. Applications to degenerate elliptic equations are given.
openaire   +3 more sources

Maximal estimates for fractional Schr\"odinger equations with spatial variable coefficient

open access: yesElectronic Journal of Differential Equations, 2018
Let $v(r,t)=\mathcal{T}_tv_0(r)$ be the solution to a fractional Schrodinger equation where the coefficient of Laplacian depends on the spatial variable. We prove some weighted $L^q$ estimates for the maximal operator generated by $\mathcal{T}_t$ with
Bo-Wen Zheng
doaj  

Embeddings of Weighted Sobolev Spaces

open access: yes, 1999
We prove a version of Schur’s lemma for operators with positive kernels on weighted \(L_p\) spaces and apply the result to Riesz potentials of first order to get weighted generalizations of Trudinger’s limiting embedding.
Krbec, Miroslav, Schott, Thomas
openaire   +1 more source

control formulated in the Weighted Sobolev space for underactuated mechanical systems with input coupling

open access: yes, 2018
Two important paradigms in control theory are the nonlinear H2 and H∞ control approaches. Despite many advantages, such approaches present limitations in the sense to control the transient closed-loop response.
Daniel N. Cardoso   +3 more
core   +1 more source

Existence and uniqueness of solutions to parabolic fractional differential equations with integral conditions

open access: yesElectronic Journal of Differential Equations, 2014
In this article, we establish sufficient conditions for the existence and uniqueness of a solution, in a functional weighted Sobolev space, for partial fractional differential equations with integral conditions.
Taki-Eddine Oussaeif   +1 more
doaj  

Global solvability of the Laplace equation in weighted Sobolev spaces

open access: yes
We consider a non-local boundary value problem for the Laplace equation in unbounded domain. We are interested for the weak solvability of that problem in the framework of weighted Sobolev spaces with Muckenhoupt weight.
Natavan Nasibova   +3 more
core   +1 more source

Existence and asymptotic behavior of solutions to the generalized damped Boussinesq equation

open access: yesElectronic Journal of Differential Equations, 2012
We consider the Cauchy problem for the n-dimensional generalized damped Boussinesq equation. Based on decay estimates of solutions to the corresponding linear equation, we define a solution space with time weighted norms.
Yinxia Wang
doaj  

Weak solutions for degenerate semilinear elliptic BVPs in unbounded domains

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we prove the existence of a weak solution for the degenerate semilinear elliptic Dirichlet boundary-value problem $$displaylines{ Lu(x)+sum_{i=1}^n g(x)h(u(x))D_iu(x)=f(x)quad hbox{in }Omega,cr u=0quad hbox{on }partialOmega, }$$ in
Rasmita Kar
doaj  

Weighted Sobolev spaces with applications to singular nonlinear boundary value problems

open access: yes, 1983
Variational methods are used in a weighted Sobolev space to prove the existence of solutions for a certain class of singular nonlinear ordinary differential ...
Kurtz, J.C
core   +1 more source

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