January/Febraury 2024 Bifurcation and hyperbolicity for a nonlocal quasilinear parabolic problem
José M. Arrieta, Alexandre N. Carvalho, Estefani M. Moreira, José Valero
Adv. Differential Equations 29(1/2): 1-26 (January/Febraury 2024). DOI: 10.57262/ade029-0102-1

Abstract

In this article, we study the scalar one-dimensional nonlocal quasilinear problem of the form$$u_t=a(\Vert u_x\Vert^2)u_{xx}+\nu f(u) , $$with Dirichlet boundary conditions on the interval$[0,\pi]$, where$a: \mathbb{R}^+\to [m,M]\subset (0,+\infty)$ and$f: \mathbb{R}\to \mathbb{R}$ are continuous functions that satisfy suitable additional conditions. We give a complete characterization of the bifurcations and hyperbolicity for the corresponding equilibria. With respect to bifurcation, the existing result requires that the function$a(\cdot)$ be non-decreasing and shows that bifurcations are pitchfork supercritical bifurcations from zero. We extend these results to the case of a general smooth nonlocal diffusion function$a(\cdot)$ and show that bifurcations may be pitchfork or saddle-node, both subcritical or supercritical. Concerning hyperbolicity, we specifying necessary and sufficient conditions for its occurrence. We also explore some examples to exhibit the variety of possibilities, depending on the choice of the function$a(\cdot)$, that may occur as the parameter$\nu$ varies.

Citation

Download Citation

José M. Arrieta. Alexandre N. Carvalho. Estefani M. Moreira. José Valero. "Bifurcation and hyperbolicity for a nonlocal quasilinear parabolic problem." Adv. Differential Equations 29 (1/2) 1 - 26, January/Febraury 2024. https://doi.org/10.57262/ade029-0102-1

Information

Published: January/Febraury 2024
First available in Project Euclid: 20 September 2023

Digital Object Identifier: 10.57262/ade029-0102-1

Subjects:
Primary: 35B32 , 35K55 , 35K57 , 35K58 , 35K59 , 37B30 , 37B35

Rights: Copyright © 2024 Khayyam Publishing, Inc.

JOURNAL ARTICLE
26 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

Vol.29 • No. 1/2 • January/February 2024
Back to Top