Results 31 to 40 of about 30,910 (222)

A class of p1(x, ⋅) & p2(x, ⋅)-fractional Kirchhoff-type problem with variable s(x, ⋅)-order and without the Ambrosetti-Rabinowitz condition in ℝN

open access: yesOpen Mathematics, 2022
In this article, we study a class of Kirchhoff-type equation driven by the variable s(x, ⋅)-order fractional p1(x, ⋅) & p2(x, ⋅)-Laplacian. With the help of three different critical point theories, we obtain the existence and multiplicity of solutions in
Bu Weichun, An Tianqing, Zuo Jiabin
doaj   +1 more source

Global well-posedness of Kirchhoff systems [PDF]

open access: yes, 2012
The aim of this paper is to establish the $H^1$ global well-posedness for Kirchhoff systems. The new approach to the construction of solutions is based on the asymptotic integrations for strictly hyperbolic systems with time-dependent coefficients. These
Bernstein   +24 more
core   +2 more sources

Multiple solutions for critical Choquard-Kirchhoff type equations [PDF]

open access: yesAdvances in Nonlinear Analysis, 2020
AbstractIn this article, we investigate multiplicity results for Choquard-Kirchhoff type equations, with Hardy-Littlewood-Sobolev critical exponents,−a+b∫RN|∇u|2dxΔu=αk(x)|u|q−2u+β∫RN|u(y)|2μ∗|x−y|μdy|u|2μ∗−2u,x∈RN,$$\begin{array}{} \displaystyle -\left(a + b\int\limits_{\mathbb{R}^N} |\nabla u|^2 dx\right){\it\Delta} u = \alpha k(x)|u|^{q-2}u + \beta ...
Binlin Zhang   +3 more
openaire   +4 more sources

On an elliptic Kirchhoff-type problem depending on two parameters

open access: yes, 2009
In this paper, we consider the Dirichlet problem associated to an elliptic Kirchhoff-type equation depending on two parameters. Under rather general and natural assumptions, we prove that, for certain values of the parameters, the problem has at least ...
A. Mao   +7 more
core   +2 more sources

Assessing the role of spatial externalities in the survival of Italian innovative startups

open access: yesRegional Science Policy &Practice, EarlyView., 2023
Abstract The paper provides novel empirical evidence about the effects of spatial externalities on the survival of innovative startups in Italy. Using geocoded firm‐level data, we build micro‐geographic measures of specialization and diversity that are robust to the modifiable areal unit problem.
Diego Giuliani   +4 more
wiley   +1 more source

On boundary layer in the Mindlin plate model: Levy plates [PDF]

open access: yes, 2008
This work is related to the bending problem of thick rectangular Levy plates. Series solution for the Mindlin (thick) plate model is obtained and represented as a sum of the Kirchhoff (thin) plate model solution, the ``shear terms'' and the ``boundary ...
Brank, Boštjan
core   +1 more source

Multiplicity and concentration of solutions for Kirchhoff equations with exponential growth

open access: yesBulletin of Mathematical Sciences
In this paper, we deal with fractional [Formula: see text]-Laplace Kirchhoff equations with exponential growth of the form 𝜀ps(a + b[u] s,pp)(−Δ) psu + Z(x)|u|p−2u = h(u)in ℝN, where [Formula: see text] is a positive parameter, [Formula: see text ...
Xueqi Sun, Yongqiang Fu, Sihua Liang
doaj   +1 more source

The Existence of Multiple Solutions for Nonhomogeneous Kirchhoff Type Equations in

open access: yesAbstract and Applied Analysis, 2013
We are concerned with the existence of multiple solutions to the nonhomogeneous Kirchhoff type equation where are positive constants, , we can find a constant such that for all the equation has at least two radial solutions provided .
Qi Zhang, Xiaoli Zhu
doaj   +1 more source

SOLUCIÓN LOCAL DE UNA ECUACIÓN DE KIRCHHOFF NO LINEAL VISCOELÁSTICA CON TÉRMINO DISIPATIVO

open access: yesPesquimat, 2014
In this work, we study the existence and uniqueness of the local solutions to themixed problem for a type of viscoelastic nonlinear Kirchhoff 's equation with dissipativeterm.
Teófanes Quispe Méndez
doaj   +1 more source

A multiplicity result for a fractional Kirchhoff equation in $\mathbb{R}^{N}$ with a general nonlinearity

open access: yes, 2017
In this paper we deal with the following fractional Kirchhoff equation \begin{equation*} \left(p+q(1-s) \iint_{\mathbb{R}^{2N}} \frac{|u(x)- u(y)|^{2}}{|x-y|^{N+2s}} \, dx\,dy \right)(-\Delta)^{s}u = g(u) \mbox{ in } \mathbb{R}^{N}, \end{equation*} where
Ambrosio, Vincenzo, Isernia, Teresa
core   +1 more source

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