Results 31 to 40 of about 75 (69)

Role of dimension and geometry: non-uniqueness in the pseudo-one-dimensional limit for Turing patterns on parallelograms

open access: yesEuropean Journal of Applied Mathematics
Turing patterns provide a classical mechanism for understanding self-organisation in reaction-diffusion systems. In one spatial dimension, a critical domain size is derivable, which defines the bifurcation point for patterning, meaning that domain ...
Thomas E. Woolley, Václav Klika
doaj   +1 more source

On Stationary Schrödinger-Poisson Equations Modelling An Electron Gas With Reduced Dimension

open access: yes, 1995
. We regard the Schrodinger--Poisson system arising from the modelling of an electron gas with reduced dimension in a bounded up to three-- dimensional domain and establish the method of steepest descent.
Joachim Rehberg, Hans-Christoph Kaiser
core  

Minimizing Schrödinger eigenvalues for confining potentials

open access: yesAdvanced Nonlinear Studies
We consider the problem of minimizing the lowest eigenvalue of the Schrödinger operator −Δ + V in L2(Rd) ${L}^{2}({\mathbb{R}}^{d})$ when the integral ∫e −tV  dx is given for some t > 0. We show that the eigenvalue is minimal for the harmonic oscillator
Frank Rupert L.
doaj   +1 more source

A Hybrid System Consisting of Two Flexible Beams Connected by a Point Mass: Spectral Analysis and Well-Posedness in Asymmetric Spaces

open access: yes, 1997
. We consider a hybrid system consisting on two flexible beams connected by a point mass. We prove that the presence of the point mass affects the spectral gap when the inertia term does not vanish. This allows us to show that the system is well-posed in
Enrique Zuazua, Carlos Castro
core  

ON THE WAVE STRUCTURE OF TWO-PHASE FLOW MODELS

open access: yes, 2008
. We explore the relationship between two common two-phase flow models, usually denoted as the two-fluid and drift-flux models. They differ in their mathematical description of momentum transfer between the phases. In this paper we provide a framework in
Steinar Evje A, Tore Fl˚atten A
core  

A spectral estimate for the Dirac operator on Riemannian flows

open access: yesOpen Mathematics, 2010
Ginoux Nicolas, Habib Georges
doaj   +1 more source

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