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The purpose of this paper is to study the limit in L(Ω), as t→∞, of solutions of initial-boundary-value problems of the form ut−∆w = 0 and u ∈ β(w) in a bounded domain Ω with general boundary conditions ∂w ∂η + γ(w) 3 0. We prove that a solution stabilizes by converging as t → ∞ to a solution of the associated stationary problem. On the other hand, since in… (More)

- Noureddine Igbida
- SIAM J. Math. Analysis
- 2012

Our aim is to introduce and study a new partial integrodifferential equation (PIDE) associated with the dynamics of some physical granular structure with arbitrary component sizes, like a sandpile or sea dyke. Our PIDE is closely related to the nonlocal evolution problem introduced in [F. Andreu et al., Calc. Var. Partial Differential Equations, 35 (2009),… (More)

- Noureddine Igbida
- SIAM J. Math. Analysis
- 2017

We study the asymptotic behavior of the sign-changing solution of the equation ut = ∇·(|u|−α∇u)+f, when the diffusion becomes very fast, i.e. as α ↑ 1. We prove that a solution uα(t) converges in L(Ω), uniformly for t in subsets with compact support in (0, T ), to a solution of ut = ∇·(|u|−1∇u)+f. In contrast with the case of α < 1, we prove that the… (More)

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