Si considerano equazioni di Ginzburg-Landau complesse del tipo ${u}_{t}-\alpha \mathrm{\Delta}u+P\left({\left|u\right|}^{2}\right)u=0$ in ${\mathbb{R}}^{N}$ dove $P$ è polinomio di grado $K$ a coefficienti complessi e $\alpha $ è un numero complesso con parte reale positiva $\mathrm{\Re}\alpha $. Nell'ipotesi che la parte reale del coefficiente del termine di grado massimo $P$ sia positiva, si dimostra l'esistenza e la regolarità di una soluzione globale nel caso $\left|\alpha \right|<C\mathrm{\Re}\alpha $, dove $C$ dipende da $K$ e $N$.

In this paper, we investigate the coupling between operator splitting techniques and a time parallelization scheme, the parareal algorithm, as a numerical strategy for the simulation of reaction-diffusion equations modelling multi-scale reaction waves. This type of problems induces peculiar difficulties and potentially large stiffness which stem from the broad spectrum of temporal scales in the nonlinear chemical source term as well as from the presence of large spatial gradients in the reactive...

In this paper, we
investigate the coupling between operator splitting techniques and a time
parallelization scheme, the parareal algorithm,
as a numerical
strategy for the simulation of reaction-diffusion equations modelling multi-scale reaction waves.
This type of problems induces peculiar difficulties and potentially large stiffness which stem from the broad spectrum
of temporal scales in the nonlinear chemical source term as well as from the presence of large spatial gradients in
the reactive...

We tackle the numerical simulation of reaction-diffusion equations modeling multi-scale
reaction waves. This type of problems induces peculiar difficulties and potentially large
stiffness which stem from the broad spectrum of temporal scales in the nonlinear chemical
source term as well as from the presence of large spatial gradients in the reactive
fronts, spatially very localized. A new resolution strategy was recently introduced
that combines...

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