Evolution equations on time-dependent Lebesgue spaces with variable exponents

Authors

  • Jacson Simsen Univ. Federal de Itajuba, Minas Gerais, Brazil

DOI:

https://doi.org/10.58997/ejde.2023.50

Keywords:

Non-autonomous parabolic problems; variable exponents; p-Laplacian; pullback attractors; upper semicontinuity

Abstract

We extend the results in Kloeden-Simsen [CPAA 2014] to \(p(x,t)\)-Laplacian problems on time-dependent Lebesgue spaces with
variable exponents. We study the equation $$\displaylines{  \frac{\partial u_\lambda}{\partial t}(t)-\operatorname{div}\big(D_\lambda(t,x)|\nabla u_\lambda(t)|^{p(x,t)-2}\nabla  _\lambda(t)\big)
+|u_\lambda(t)|^{p(x,t)-2}u_\lambda(t)  =B(t,u_\lambda(t)) }$$
on a bounded smooth domain \(\Omega\) in \(\mathbb{R}^n\),
\(n\geq 1\), with a homogeneous Neumann boundary condition, where the exponent \(p(\cdot)\in C(\bar{\Omega}\times [\tau,T],\mathbb{R}^+)\) satisfies \(\min p(x,t)>2\), and \(\lambda\in [0,\infty)\) is a parameter.

For more information see https://ejde.math.txstate.edu/Volumes/2023/50/abstr.html

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2023-07-23

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Evolution equations on time-dependent Lebesgue spaces with variable exponents. (2023). Electronic Journal of Differential Equations, 2023(01-87), No. 50, 1-13. https://doi.org/10.58997/ejde.2023.50