Results 201 to 210 of about 6,728 (222)

Nonlinear Identification of Friction Model Using Concave/Convex Parameterization

2006 IEEE International Symposium on Industrial Electronics, 2006
This paper presents the min-max non linear identification method applied to a friction model. This static friction model includes the Coulomb and viscous friction with stiction and Stribeck effect. The estimator used for identification is based on concave/convex parameterization and a min-max optimization problem. Based on the persistence of excitation
Said Grami, Pascal Bigras
openaire   +1 more source

The Nehari manifold for nonlocal elliptic operators involving concave–convex nonlinearities

Zeitschrift für angewandte Mathematik und Physik, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Wenjing, Deng, Shengbing
openaire   +3 more sources

On a concave–convex elliptic problem with a nonlinear boundary condition

Annali di Matematica Pura ed Applicata (1923 -), 2015
The authors study the existence, multiplicity and stability of positive solutions for problems \[ \begin{aligned} -\Delta u =a(x)|u|^{p-2}u \quad&\text{in } \Omega, \\ \frac{\partial u}{\partial\mathbf n}= \lambda |u|^{q-2}u \quad&\text{on } \partial\Omega.\end{aligned} \] Here \(\Omega\) is a bounded, smooth domain in \(\mathbb{R}^N\), \(N\geq 2\), \(\
Ramos Quoirin, Humberto, Umezu, Kenichiro   +1 more
openaire   +1 more source

Nonlocal critical equations with concave-convex nonlinearities

2016
In this chapter, we focus our attention on the following critical nonlocal fractional problem: where s ∈ (0, 1) is fixed, and (− Δ) s is the fractional Laplace operator defined, up to normalization factors, as in (1.20), while Ω ∈ ℝ n , n > 2 s , is open, bounded and with continuous boundary and λ > 0.
openaire   +1 more source

Multiple solutions for a generalised Schrödinger problem with “concave–convex” nonlinearities

Zeitschrift für angewandte Mathematik und Physik, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Santos, Andrelino V., Santos Júnior, João R.   +1 more
openaire   +2 more sources

Biharmonic equations of Kirchhoff type with concave-convex nonlinearities

Journal of Mathematical Analysis and Applications
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qingyue Li, Xiyou Cheng, Chao Ji, Lu Yang   +3 more
openaire   +2 more sources

Ground State Solutions for a Semilinear Elliptic Equation Involving Concave-convex Nonlinearities

Journal of Partial Differential Equations, 2013
Summary: This work is devoted to the existence and the multiplicity properties of the ground state solutions of the semilinear boundary value problem \(-\Delta u=\lambda a (x)u|u|^{q-2}+b (x)u|u|^{2^*-2}\) in a bounded domain coupled with Dirichlet boundary condition.
Khazaee, Kohpar O., Khademloo, S.
openaire   +1 more source

Some further results on a semilinear equation with concave–convex nonlinearity

Nonlinear Analysis: Theory, Methods & Applications, 2005
The author considers a model singular elliptic equation, with concave-convex nonlinearity, in a bounded domain. It is obtained the existence of multiple solutions with negative energy, positive solutions and sign-changing solutions.
openaire   +2 more sources

Three positive solutions for Kirchhoff problems with steep potential well and concave–convex nonlinearities

Applied Mathematics Letters, 2021
Tsung-fang Wu
exaly  

On semilinear elliptic equations involving concave–convex nonlinearities and sign-changing weight function

Journal of Mathematical Analysis and Applications, 2006
Tsung-fang Wu
exaly