Results 91 to 100 of about 1,452,798 (281)

Existence of infinitely many solutions for fourth-order equations depending on two parameters

open access: yesElectronic Journal of Differential Equations, 2017
By using variational methods and critical point theory, we establish the existence of infinitely many classical solutions for a fourth-order differential equation. This equation has nonlinear boundary conditions and depends on two real parameters.
Armin Hadjian, Maryam Ramezani
doaj  

Infinitely many weak solutions for fourth-order equations depending on two parameters

open access: yesBoletim da Sociedade Paranaense de Matemática, 2018
In this paper, by employing Ricceri variational principle, we prove the existence of infinitely many weak solutions for fourth-order problems depending on two real parameters.
Saeid Shokooh   +2 more
doaj   +1 more source

Cauchy problem for dissipative Hölder solutions to the incompressible Euler equations [PDF]

open access: yesarXiv, 2013
We consider solutions to the Cauchy problem for the incompressible Euler equations on the 3-dimensional torus which are continuous or H\"older continuous for any exponent $\theta<\frac{1}{16}$. Using the techniques introduced in \cite{DS12} and \cite{DS12H}, we prove the existence of infinitely many (H\"older) continuous initial vector fields starting ...
arxiv  

Infinitely many solutions for Kirchhoff-type problems depending on a parameter

open access: yesElectronic Journal of Differential Equations, 2016
In this article, we study a Kirchhoff type problem with a positive parameter $\lambda$, $$\displaylines{ -K\Big( \int_{\Omega }|\nabla u|^{2}dx\Big) \Delta u=\lambda f(x,u) , \quad \text{in } \Omega , \cr u=0, \quad \text{on } \partial \Omega , }$
Juntao Sun, Yongbao Ji, Tsung-fang Wu
doaj  

Solutions to euclidean gravity for infinitely many instantons

open access: yesPhysics Letters B, 1979
Abstract Self-dual solutions to euclidean Einstein equations are obtained by integrating over various configurations of an infinite number of Hawking-Gibbons multi-instantons. The resulting metrics are all stationary and of Bianchi type II (euclidean version). They may be previously unknown solutions. In the weak field approximation one finds related
openaire   +2 more sources

Infinitely many solutions for Schrödinger–Kirchhoff-type equations involving indefinite potential

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
In this paper, we study the multiplicity of solutions for the following Schrödinger–Kirchhoff-type equation \[ \begin{cases}-\left(a+b\int_{\mathbb{R}^N}|\nabla u|^2dx\right)\triangle u+V(x)u=f(x,u)+g(x,u), \quad x\in \mathbb{R}^N,\\ u\in H^1(\mathbb{R}^
Qingye Zhang, Bin Xu
doaj   +1 more source

Construction of diagonal quintic threefolds with infinitely many rational points [PDF]

open access: yesarXiv
In this note we present a construction of an infinite family of diagonal quintic threefolds defined over $\Q$ each containing infinitely many rational points. As an application, we prove that there are infinitely many quadruples $B=(B_{0}, B_{1}, B_{2}, B_{3})$ of co-prime integers such that for a suitable chosen integer $b$ (depending on $B$), the ...
arxiv  

Existence of infinitely many solutions for the fractional Schr\"odinger- Maxwell equations

open access: yes, 2015
In this paper, by using variational methods and critical point theory, we shall mainly study the existence of infinitely many solutions for the following fractional Schr\"odinger-Maxwell equations $$( -\Delta )^{\alpha} u+V(x)u+\phi u=f(x,u), \hbox{in } \
Wei, Zhongli
core  

Existence of infinitely many solutions for semilinear elliptic equations

open access: yesElectronic Journal of Differential Equations, 2016
In this article, we study the existence and infinitely many solutions for the elliptic boundary-value problem $$\displaylines{ -\Delta u+a(x)u=f(x,u) \quad\text{in }\Omega, \cr u=0 \quad\text{on }\partial\Omega.
Hui-Lan Pan, Chun-Lei Tang
doaj  

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