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Error estimates for a FitzHugh–Nagumo parameter-dependentreaction-diffusion system

Published online by Cambridge University Press:  23 November 2012

Konstantinos Chrysafinos
Affiliation:
Department of Mathematics, National Technical University of Athnens, Zografou Campus, 15780 Athens, Greece. chrysafinos@math.ntua.gr
Sotirios P. Filopoulos
Affiliation:
Section of Applied and Theoretical Mechanics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece; sfilop@gmail.com; papathth@gmail.com
Theodosios K. Papathanasiou
Affiliation:
Section of Applied and Theoretical Mechanics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece; sfilop@gmail.com; papathth@gmail.com

Abstract

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Space-time approximations of the FitzHugh–Nagumo system of coupled semi-linear parabolicPDEs are examined. The schemes under consideration are discontinuous in time butconforming in space and of arbitrary order. Stability estimates are presented in thenatural energy norms and at arbitrary times, under minimal regularity assumptions.Space-time error estimates of arbitrary order are derived, provided that the naturalparabolic regularity is present. Various physical parameters appearing in the model aretracked and numerical examples are presented.

Information

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2012