Results 11 to 20 of about 270 (54)

The fractional Keller-Segel model [PDF]

open access: yes, 2006
The Keller-Segel model is a system of partial differential equations modelling chemotactic aggregation in cellular systems. This model has blowing up solutions for large enough initial conditions in dimensions d >= 2, but all the solutions are regular in
Brenner M P   +9 more
core   +1 more source

Evolution Equations governed by Lipschitz Continuous Non-autonomous Forms [PDF]

open access: yes, 2014
We prove $L^2$-maximal regularity of linear non-autonomous evolutionary Cauchy problem \begin{equation}\label{eq00}\nonumber \dot{u} (t)+A(t)u(t)=f(t) \hbox{ for }\ \hbox{a.e.
Laasri, Hafida, Sani, Ahmed
core   +3 more sources

Local existence result of the single dopant diffusion including cluster reactions of high order

open access: yesAbstract and Applied Analysis, Volume 6, Issue 1, Page 13-34, 2001., 2001
We consider the pair diffusion process which includes cluster reactions of high order. We are able to prove a local (in time) existence result in arbitrary space dimensions. The model includes a nonlinear system of reaction‐drift‐diffusion equations, a nonlinear system of ordinary differential equations in Banach spaces, and a nonlinear elliptic ...
R. Bader, W. Merz
wiley   +1 more source

On a 3D isothermal model for nematic liquid crystals accounting for stretching terms [PDF]

open access: yes, 2012
The present contribution investigates the well-posedness of a PDE system describing the evolution of a nematic liquid crystal flow under kinematic transports for molecules of different shapes. More in particular, the evolution of the {\em velocity field}
Cavaterra, Cecilia, Rocca, Elisabetta
core   +1 more source

Backward blow-up estimates and initial trace for a parabolic system of reaction-diffusion [PDF]

open access: yes, 2010
In this article we study the positive solutions of the parabolic semilinear system of competitive type \[ \left\{\begin{array} [c]{c}% u_{t}-\Delta u+v^{p}=0, v_{t}-\Delta v+u^{q}=0, \end{array} \right.
Bidaut-Véron, Marie-Françoise   +2 more
core   +3 more sources

A cross-diffusion system derived from a Fokker-Planck equation with partial averaging [PDF]

open access: yes, 2016
A cross-diffusion system for two compoments with a Laplacian structure is analyzed on the multi-dimensional torus. This system, which was recently suggested by P.-L.
Jüngel, Ansgar, Zamponi, Nicola
core   +3 more sources

Longtime behavior for a generalized Cahn-Hilliard system with fractional operators [PDF]

open access: yes, 2019
In this contribution, we deal with the longtime behavior of the solutions to the fractional variant of the Cahn-Hilliard system, with possibly singular potentials, that we have recently investigated in the paper `Well-posedness and regularity for a ...
Colli, Pierluigi   +2 more
core   +3 more sources

Non-simultaneous quenching in a system of heat equations coupled at the boundary [PDF]

open access: yes, 2006
We study the solutions of a parabolic system of heat equations coupled at the boundary through a nonlinear flux. We characterize in terms of the parameters involved when nonsimultaneous quenching may appear.
de Pablo, Arturo   +3 more
core   +1 more source

Analysis of a model arising from invasion by precursor and differentiated cells

open access: yes, 2013
We study the wave solutions for a degenerated reaction diffusion system arising from the invasion of cells. We show that there exists a family of waves for the wave speed larger than or equals a certain number, and below which there is no monotonic wave ...
Hou, Xiaojie
core   +2 more sources

Uniqueness of transverse solutions for reaction-diffusion equations with spatially distributed hysteresis

open access: yes, 2012
The paper deals with reaction-diffusion equations involving a hysteretic discontinuity in the source term, which is defined at each spatial point. Such problems describe biological processes and chemical reactions in which diffusive and nondiffusive ...
Gurevich, Pavel, Tikhomirov, Sergey
core   +1 more source

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