94-276 R. D. Benguria and M. C. Depassier, P. U. Catolica de Chile
Variational Characterization of the Speed of Propagation of Fronts for the Nonlinear Diffusion Equation (12K, LATEX) Sep 1, 94
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Abstract. We give a variational characterization for the speed of fronts of the nonlinear diffusion equation $u_t = u_{xx} + f(u)$ with $f>0$, which permits the calculation of the exact speed for arbitrary $f$.

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