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On the approximation of front propagation problems with nonlocal terms

Pierre Cardaliaguet, Denis Pasquignon (2001)

ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique

We investigate the approximation of the evolution of compact hypersurfaces of N depending, not only on terms of curvature of the surface, but also on non local terms such as the measure of the set enclosed by the surface.

On the approximation of front propagation problems with nonlocal terms

Pierre Cardaliaguet, Denis Pasquignon (2010)

ESAIM: Mathematical Modelling and Numerical Analysis

We investigate the approximation of the evolution of compact hypersurfaces of N depending, not only on terms of curvature of the surface, but also on non local terms such as the measure of the set enclosed by the surface.

On the asymptotic behavior for convection-diffusion equations associated to higher order elliptic operators in divergence form.

Mokhtar Kirane, Mahmoud Qafsaoui (2002)

Revista Matemática Complutense

We consider the linear convection-diffusion equation associated to higher order elliptic operators⎧  ut + Ltu = a∇u   on Rnx(0,∞)⎩  u(0) = u0 ∈ L1(Rn),where a is a constant vector in Rn, m ∈ N*, n ≥ 1 and L0 belongs to a class of higher order elliptic operators in divergence form associated to non-smooth bounded measurable coefficients on Rn. The aim of this paper is to study the asymptotic behavior, in Lp (1 ≤ p ≤ ∞), of the derivatives Dγu(t) of the solution of the convection-diffusion equation...

On the asymptotic behavior of solutions of second order parabolic partial differential equations

Wei-Cheng Lian, Cheh-Chih Yeh (1996)

Annales Polonici Mathematici

We consider the second order parabolic partial differential equation    i , j = 1 n a i j ( x , t ) u x i x j + i = 1 n b i ( x , t ) u x i + c ( x , t ) u - u t = 0 . Sufficient conditions are given under which every solution of the above equation must decay or tend to infinity as |x|→ ∞. A sufficient condition is also given under which every solution of a system of the form    L α [ u α ] + β = 1 N c α β ( x , t ) u β = f α ( x , t ) , where    L α [ u ] i , j = 1 n a i j α ( x , t ) u x i x j + i = 1 n b i α ( x , t ) u x i - u t , must decay as t → ∞.

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