Special Session 144: 

A semidiscrete numerical method for the Gurtin-Pipkin equation

Filippo Dell Oro
Politecnico di Milano
Italy
Co-Author(s):    Olivier Goubet, Youcef Mammeri, Vittorino Pata
Abstract:
We introduce a new mathematical framework for the time discretization of evolution equations with memory. As a model, we focus on an abstract version of the equation $$ \partial_t u(t) - \int_0^\infty g(s) \Delta u(t-s) d s =0 $$ with Dirichlet boundary conditions, modeling hereditary heat conduction with Gurtin-Pipkin thermal law. Well-posedness and exponential stability of the discrete scheme are shown, as well as the convergence to the solutions of the continuous problem when the time-step parameter vanishes.