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Radon measures solving the Cauchy problem of the nonlinear transport equation

Lorenz, Thomas

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Abstract

The focus of interest is the Cauchy problem of the nonlinear transport equation d_t u + div (f(u, ·) u) = g(u, ·) u together with its distributional solutions u(·) whose values are positive Radon measures on the Euclidean space with compact support. The coefficients f(u, t), g(u, t) are assumed to be uniformly bounded and Lipschitz continuous vector fields on the Euclidean space. Sufficient conditions on the coefficients for existence, uniqueness and even for stability of these distributional solutions are presented. Starting from the well-known results about the corresponding linear problem, the step towards the nonlinear problem here relies on Aubin's mutational equations, i.e. dynamical systems in a metric space (with a new slight modification).

Item Type: Preprint
Series Name: IWR-Preprints
Date Deposited: 28. Feb 2007 13:08
Date: 2007
Faculties / Institutes: Service facilities > Interdisciplinary Center for Scientific Computing
Subjects: 510 Mathematics
Controlled Keywords: Transportgleichung, Nichtlineare partielle Differentialgleichung, Radon-Maß, Verallgemeinerte Differentialgleichung
Uncontrolled Keywords: nonlinear transport equation , Radon measures on Euclidean space with compact support , mutational equations in metric space
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