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Communications of the American Mathematical Society

Launched by the American Mathematical Society in 2021, Communications of the American Mathematical Society (CAMS), is a Diamond Open Access online journal dedicated to publishing the very best research and review articles across all areas of mathematics. The journal presents a holistic view of mathematics and its applications to a wide range of disciplines.

ISSN 2692-3688

The 2020 MCQ for Communications of the American Mathematical Society is 1.00.

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Universal selection of pulled fronts
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by Montie Avery and Arnd Scheel
Comm. Amer. Math. Soc. 2 (2022), 172-231
DOI: https://doi.org/10.1090/cams/8
Published electronically: July 14, 2022

Abstract:

We establish selection of critical pulled fronts in invasion processes as predicted by the marginal stability conjecture. Our result shows convergence to a pulled front with a logarithmic shift for open sets of steep initial data, including one-sided compactly supported initial conditions. We rely on robust, conceptual assumptions, namely existence and marginal spectral stability of a front traveling at the linear spreading speed and demonstrate that the assumptions hold for open classes of spatially extended systems. Previous results relied on comparison principles or probabilistic tools with implied nonopen conditions on initial data and structure of the equation. Technically, we describe the invasion process through the interaction of a Gaussian leading edge with the pulled front in the wake. Key ingredients are sharp linear decay estimates to control errors in the nonlinear matching and corrections from initial data.
References
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Bibliographic Information
  • Montie Avery
  • Affiliation: University of Minnesota, School of Mathematics, 206 Church St. S.E., Minneapolis, Minnesota 55455
  • MR Author ID: 1305137
  • ORCID: 0000-0001-6524-1081
  • Arnd Scheel
  • Affiliation: University of Minnesota, School of Mathematics, 206 Church St. S.E., Minneapolis, Minnesota 55455
  • MR Author ID: 319772
  • ORCID: 0000-0001-6667-3003
  • Received by editor(s): May 13, 2021
  • Received by editor(s) in revised form: February 3, 2022
  • Published electronically: July 14, 2022
  • Additional Notes: This work was supported by the National Science Foundation through the Graduate Research Fellowship Program under Grant No. 00074041, as well as through NSF-DMS-1907391. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
    The first author is the corresponding author.
  • © Copyright 2022 by the authors under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License (CC BY NC ND 4.0)
  • Journal: Comm. Amer. Math. Soc. 2 (2022), 172-231
  • MSC (2000): Primary 35B40, 35K25, 35B35, 35K55
  • DOI: https://doi.org/10.1090/cams/8
  • MathSciNet review: 4452778