Results 21 to 30 of about 4,182 (106)

Asymptotic behavior of positive large solutions of semilinear Dirichlet problems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
Let $\Omega $ be a smooth bounded domain in $\mathbb{R}^{n},\ n\geq 2$. This paper deals with the existence and the asymptotic behavior of positive solutions of the following problems \begin{equation*} \Delta u=a(x)u^{\alpha },\alpha >1\text{ and }\Delta
Habib Maagli   +2 more
doaj   +1 more source

The exact asymptotic behaviour of the unique solution to a singular Dirichlet problem

open access: yesBoundary Value Problems, 2006
By Karamata regular variation theory, we show the existence and exact asymptotic behaviour of the unique classical solution u∈C2+α(Ω)∩C(Ω¯) near the boundary to a singular Dirichlet problem −Δu=g(u)−k(x), u>0, xà ...
Jianning Yu, Zhijun Zhang
doaj   +2 more sources

Existence and Global Asymptotic Behavior of Positive Solutions for Nonlinear Fractional Dirichlet Problems on the Half-Line

open access: yesAbstract and Applied Analysis, 2014
We are interested in the following fractional boundary value problem: Dαu(t)+atuσ=0, t∈(0,∞), limt→0⁡t2-αu(t)=0, limt→∞⁡t1-αu(t)=0, where ...
Imed Bachar, Habib Mâagli
doaj   +1 more source

Exact boundary behavior for the solutions to a class of infinity Laplace equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, by Karamata regular variation theory and the method of lower and upper solutions, we give an exact boundary behavior for the unique solution near the boundary to the singular Dirichlet problem $ -\Delta_{\infty} u=b(x)g(u), \ u>0, \ x \in \
Ling Mi
doaj   +1 more source

Large deviations for random walks under subexponentiality: the big-jump domain [PDF]

open access: yes, 2007
For a given one-dimensional random walk $\{S_n\}$ with a subexponential step-size distribution, we present a unifying theory to study the sequences $\{x_n\}$ for which $\mathsf{P}\{S_n>x\}\sim n\mathsf{P}\{S_1>x\}$ as $n\to\infty$ uniformly for $x\ge x_n$
Denisov, D., Dieker, A. B., Shneer, V.
core   +7 more sources

Positive solutions of semilinear problems in an exterior domain of R2 $\mathbb{R}^{2}$

open access: yesBoundary Value Problems, 2019
The aim of this paper is to establish the existence and global asymptotic behavior of a positive continuous solution for the following semilinear problem: {−Δu(x)=a(x)uσ(x),x∈D,u>0,in D,u(x)=0,x∈∂D,lim|x|→∞u(x)ln|x|=0, $$ \textstyle\begin{cases} -\Delta ...
Imed Bachar, Habib Mâagli, Said Mesloub
doaj   +1 more source

Applications of Tauberian Theorem for High-SNR Analysis of Performance over Fading Channels

open access: yes, 2011
This paper derives high-SNR asymptotic average error rates over fading channels by relating them to the outage probability, under mild assumptions. The analysis is based on the Tauberian theorem for Laplace-Stieltjes transforms which is grounded on the ...
Tepedelenlioglu, Cihan, Zhang, Yuan
core   +1 more source

Stable laws and Beurling kernels [PDF]

open access: yes, 2016
We identify a close relation between stable distributions and the limiting homomorphisms central to the theory of regular variation. In so doing some simplifications are achieved in the direct analysis of these laws in Pitman and Pitman [PitP]; stable ...
Ostaszewski, Adam
core   +3 more sources

Singular phenomena in nonlinear elliptic problems. From blow-up boundary solutions to equations with singular nonlinearities [PDF]

open access: yes, 2006
In this survey we report on some recent results related to various singular phenomena arising in the study of some classes of nonlinear elliptic equations. We establish qualitative results on the existence, nonexistence or the uniqueness of solutions and
Vicentiu D. Rădulescu
semanticscholar   +1 more source

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