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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Transition fronts for the Fisher-KPP equation
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by François Hamel and Luca Rossi PDF
Trans. Amer. Math. Soc. 368 (2016), 8675-8713 Request permission

Abstract:

This paper is concerned with transition fronts for reaction-diffusion equations of the Fisher-KPP type. Basic examples of transition fronts connecting the unstable steady state to the stable one are the standard traveling fronts, but the class of transition fronts is much larger and the dynamics of the solutions of such equations is very rich. In the paper, we describe the class of transition fronts and we study their qualitative dynamical properties. In particular, we characterize the set of their admissible asymptotic past and future speeds and their asymptotic profiles and we show that the transition fronts can only accelerate. We also classify the transition fronts in the class of measurable superpositions of standard traveling fronts.
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Additional Information
  • François Hamel
  • Affiliation: Aix Marseille Université, CNRS, Centrale Marseille, Institut de Mathématiques de Marseille, UMR 7373, 13453 Marseille, France
  • Luca Rossi
  • Affiliation: Dipartimento di Matematica P. e A., Università di Padova, via Trieste 63, 35121 Padova, Italy
  • Address at time of publication: CNRS, UMR 8557, Centre d’Analyse et de Mathématique Sociales, 75244 Paris Cedex 13, France
  • MR Author ID: 789313
  • Email: luca.rossi@ehess.fr
  • Received by editor(s): April 10, 2014
  • Received by editor(s) in revised form: October 30, 2014
  • Published electronically: January 26, 2016
  • Additional Notes: This work was carried out in the framework of the Labex Archimède (ANR-11-LABX-0033) and of the A*MIDEX project (ANR-11-IDEX-0001-02), funded by the “Investissements d’Avenir” French government program managed by the French National Research Agency (ANR). The research leading to these results also received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement n.321186 - ReaDi - Reaction-Diffusion Equations, Propagation and Modelling and from Italian GNAMPA-INdAM. Part of this work was carried out during visits by the first author to the Departments of Mathematics of the University of California, Berkeley, of Stanford University and of the Università di Padova, whose hospitality is thankfully acknowledged.
  • © Copyright 2016 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 368 (2016), 8675-8713
  • MSC (2010): Primary 35B40, 35K57, 35B08, 35C07
  • DOI: https://doi.org/10.1090/tran/6609
  • MathSciNet review: 3551585