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Journal of Differential Equations
Article . 2018 . Peer-reviewed
License: Elsevier TDM
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Article . 2018
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https://dx.doi.org/10.48550/ar...
Article . 2021
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On a parabolic–elliptic system with gradient dependent chemotactic coefficient

On a parabolic-elliptic system with gradient dependent chemotactic coefficient
Authors: Mihaela Negreanu; J. Ignacio Tello;

On a parabolic–elliptic system with gradient dependent chemotactic coefficient

Abstract

We consider a second order PDEs system of Parabolic-Elliptic type with chemotactic terms. The system describes the evolution of a biological species "$u$" moving towards a higher concentration of a chemical stimuli "$v$" in a bounded and open domain of $ \mathcal{R}^N$. In the system considered, the chemotaxis sensitivity depends on the gradient of $v$, i.e., the chemotaxis term has the following expression $$- div \left(χu |\nabla v|^{p-2}\nabla v \right),$$ where $χ$ is a positive constant and $p$ satisfies $$p \in (1, \infty), \quad \mbox{ if } N=1 \quad \mbox{ and } \quad p\in \left(1, \frac{N}{N-1}\right), \quad \mbox{ if } N\geq 2.$$ We obtain uniform bounds in time in $L^{\infty}(Ω)$ of the solutions. For the one-dimensional case we prove the existence of infinitely many non-constant steady-states for $p\in (1,2)$ for any $χ$ positive and a given positive mass.

Keywords

global existence, PDEs in connection with biology, chemistry and other natural sciences, boundedness, gradient-dependent chemosensitivity, 35B45, Keller-Segel model, Mathematics - Analysis of PDEs, Initial-boundary value problems for second-order parabolic equations, Qualitative investigation and simulation of ordinary differential equation models, FOS: Mathematics, chemotaxis, Analysis of PDEs (math.AP)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
54
Top 1%
Top 10%
Top 10%
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bronze