Results 121 to 130 of about 4,999,006 (239)

Multiple solutions for nonhomogeneous Choquard equations

open access: yesElectronic Journal of Differential Equations, 2018
In this article, we consider the multiple solutions for the nonhomogeneous Choquard equations $$ - \Delta u +u=\Big(\frac{1}{|x|^{\alpha}}\ast |u|^{p}\Big)|u|^{p-2}u+h(x), \quad x\in \mathbb{R}^N, $$ and $$ - \Delta u=\Big(\frac{1}{|x|^{\alpha ...
Lixia Wang
doaj  

Multiple solutions of a fourth-order nonhomogeneous equation with critical growth in R^4

open access: yesElectronic Journal of Differential Equations, 2017
In this article we study the existence of at least two positive weak solutions of an nonhomogeneous fourth-order Navier boundary-value problem involving critical exponential growth on a bounded domain in $R^4$, with a parameter $\lambda >0$.
Abhishek Sarkar
doaj  

Critical slowing down in random anisotropy magnets

open access: yesCondensed Matter Physics, 2005
We study the purely relaxational critical dynamics with non-conserved order parameter (model A critical dynamics) for three-dimensional magnets with disorder in a form of the random anisotropy axis.
G.Moser, R.Folk, Yu.Holovatch, M.Dudka
doaj   +1 more source

Non-homogeneous problem for fractional Laplacian involving critical Sobolev exponent

open access: yesElectronic Journal of Differential Equations, 2017
In this article, we study the existence of positive solutions for the nonhomogeneous fractional equation involving critical Sobolev exponent $$\displaylines{ (-\Delta)^{s} u +\lambda u=u^p+\mu f(x), \quad u>0\quad \text{in } \Omega,\cr u =0, \quad \
Kun Cheng, Li Wang
doaj  

CRITICAL EXPONENTS IN NUCLEAR BREAKUP

open access: yesLe Journal de Physique Colloques, 1987
The moments of the fragment size distribution are studied for single events in a nuclear fragmentation experiment. It is shown that this nuclear breakup has clean remanents of a critical phenomenon.
openaire   +4 more sources

A Brezis-Nirenberg problem on hyperbolic spaces

open access: yesElectronic Journal of Differential Equations, 2019
We consider a Brezis-Nirenberg problem on the hyperbolic space $\mathbb{H}^n$. By using the stereographic projection, the problem becomes a singular problem on the boundary of the open ball $B_1(0)\subset \mathbb{R}^n$. Thanks to the Hardy inequality,
Paulo C. Carriao   +3 more
doaj  

Mapped Exponent and Asymptotic Critical Exponent of Words

open access: yes
We study how much injective morphisms can increase the repetitiveness of a given word. This question has a few possible variations depending on the meaning of ``repetitiveness''. We concentrate on fractional exponents of finite words and asymptotic critical exponents of infinite words.
Foster, Eva   +2 more
openaire   +2 more sources

Phase transitions of wave packet dynamics in disordered non-Hermitian systems

open access: yesSciPost Physics
Disorder can localize the eigenstates of one-dimensional non-Hermitian systems, leading to an Anderson transition with a critical exponent of 1. We show that, due to the lack of energy conservation, the dynamics of individual, real-space wave packets ...
Helene Spring, Viktor Könye, Fabian A. Gerritsma, Ion Cosma Fulga, Anton R. Akhmerov
doaj   +1 more source

Schrödinger equation with critical Sobolev exponent

open access: yesDifferential and Integral Equations, 2004
In this paper we study the existence of solutions and their concentration phenomena of a singularly perturbed semilinear Schrodinger equation with the presence of the critical Sobolev exponent.
openaire   +4 more sources

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