Results 41 to 50 of about 1,610,402 (143)
Solitary waves for the coupled nonlinear Klein-Gordon and Born-Infeld type equations
Electronic Journal of Differential Equations, 2012 In this article we study the existence of solutions for a nonlinear Klein-Gordon-Maxwell equation coupled with a Born-Infeld equation.
Feizhi Wang
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Norming points and critical points
Journal of Mathematical Analysis and Applications, 2017 The authors introduce a concept of differentiation for functions defined on the unit sphere of a Banach space which allows them to prove, for Banach spaces with \(C^p\) norm, that a linear functional is norm-attaining if and only if it has a critical point on the unit sphere under this new concept of differentiation.
Dong Hoon Cho, Yun Sung Choi
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Critical points of locally Lipschitz functionals inside and outside the ordered interval
Electronic Journal of Qualitative Theory of Differential EquationsIn this paper, under the condition that there exists an ordered interval composed of two internal ordered intervals which have the location similar to that of Amann's three-solution theorem, we add some simple conditions and then we obtain some results ...
Xi'an Xu, Baoxia Qin
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Multiple solutions of second order Hamiltonian systems
Electronic Journal of Qualitative Theory of Differential Equations, 2017 The existence and the multiplicity of periodic solutions for a parameter dependent second order Hamiltonian system are established via linking theorems. A monotonicity trick is adopted in order to prove the existence of an open interval of parameters for
Gabriele Bonanno +2 more
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Electronic Journal of Differential Equations, 2009 By means of the Schechter's Linking method, we study the existence of 2T-periodic solutions of the non-autonomous fourth-order ordinary differential equation $$ u''''-Au''-Bu-V_u(t,u)=0 $$ where $A>0$, $B>0$, $V(t,u)in mathbb{C}^1(mathbb{R ...
Chengyue Li, Changhua Shi
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Two positive solutions for nonlinear fourth-order elastic beam equations
Electronic Journal of Qualitative Theory of Differential Equations, 2019 The aim of this paper is to study the existence of at least two non-trivial solutions to a boundary value problem for fourth-order elastic beam equations given by \begin{align*} u^{(4)}+Au''+Bu = \lambda f(x,u) \quad \text{in } [0,1],\\ u(0) =u(1)
Giuseppina D'Aguì +2 more
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DAVIES CRITICAL POINT AND TUNNELING [PDF]
International Journal of Modern Physics D, 2012 From the point of view of tunneling, the physical meaning of the Davies critical point of a second-order phase transition in the black hole thermodynamics is clarified. At the critical point, the nonthermal contribution vanishes so that the black hole radiation is entirely thermal. It separates two phases: one with radiation enhanced by the nonthermal
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Efficient, Decentralized Detection of Qualitative Spatial Events in a Dynamic Scalar Field
Sensors, 2015 This paper describes an efficient, decentralized algorithm to monitor qualitative spatial events in a dynamic scalar field. The events of interest involve changes to the critical points (i.e., peak, pits and passes) and edges of the surface network ...
Myeong-Hun Jeong, Matt Duckham
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Advanced Nonlinear Studies, 2019 This paper is concerned with the existence of a heteroclinic solution for the following class of elliptic equations:
Alves Claudianor O.
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Quantum Critical Points-Experiments
, 1998 We review experiments on Li(Ho,Tb)pY1-pF4 which test ideas about quantum critical phenomena in the clean (ferromagnetic) and disordered (spin glass) limits. The outstanding problem of the ‘anti-glass’ discovered for p=0.045 is also described. Finally, we point out the ubiquity of quantum critical points in condensed matter physics.
Aeppli, G., Rosenbaum, T. F.
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