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The Research Seminar is a weekly space that focuses on various areas of applied mathematics, with special emphasis on Mathematical Optimization and Modeling. The main objective is to share the research results of the Modemat and put the researchers of the Center in contact with academics from all over the world, in person or through virtual platforms. Organizer of the seminar: Sergio González Andrade. To subscribe to the Seminar mailing list or propose a talk in it, please write to: sergio.gonzalez@epn.edu.ec

From anomalous to classical diffusion in a non-linear heat equation

From anomalous to classical diffusion in a non-linear heat equation

By Dr. Oscar Jarrín. Universidad de las Américas, Quito.

Seminar Date: 2022-06-02

In this talk, we consider a heat equation with the natural polynomial non-linear term; and with two different cases in the diffusion term. The first case (anomalous diffusion) concerns the fractional Laplacian operator with parameter between 1 and 2, while the second case (classical diffusion) involves the classical Laplacian operator. When a tends to 2, we prove the uniform convergence of the solutions of the anomalous diffusion case to a solution of the classical diffusion case. Moreover, we rigorous derive a convergence rate, which was numerically exhibit in previous related works.

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