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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Convergence and a posteriori error analysis for energy-stable finite element approximations of degenerate parabolic equations
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by Clément Cancès, Flore Nabet and Martin Vohralík HTML | PDF
Math. Comp. 90 (2021), 517-563 Request permission

Abstract:

We propose a finite element scheme for numerical approximation of degenerate parabolic problems in the form of a nonlinear anisotropic Fokker–Planck equation. The scheme is energy-stable, only involves physically motivated quantities in its definition, and is able to handle general unstructured grids. Its convergence is rigorously proven thanks to compactness arguments, under very general assumptions. Although the scheme is based on Lagrange finite elements of degree 1, it is locally conservative after a local postprocess giving rise to an equilibrated flux. This also allows to derive a guaranteed a posteriori error estimate for the approximate solution. Numerical experiments are presented in order to give evidence of a very good behavior of the proposed scheme in various situations involving strong anisotropy and drift terms.
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Additional Information
  • Clément Cancès
  • Affiliation: Inria, Univ. Lille, CNRS, UMR 8524 - Laboratoire Paul Painlevé, 59000 Lille, France
  • Email: clement.cances@inria.fr
  • Flore Nabet
  • Affiliation: CMAP, Ecole polytechnique, CNRS, I.P. Paris, 91128 Palaiseau, France
  • MR Author ID: 1083928
  • ORCID: 0000-0001-7828-251X
  • Email: flore.nabet@polytechnique.edu
  • Martin Vohralík
  • Affiliation: Inria, 2 rue Simone Iff, 75589 Paris, France; and Université Paris-Est, CERMICS (ENPC), 77455 Marne-la-Vallée, France
  • ORCID: 0000-0002-8838-7689
  • Email: martin.vohralik@inria.fr
  • Received by editor(s): October 16, 2018
  • Received by editor(s) in revised form: February 13, 2020
  • Published electronically: November 5, 2020
  • Additional Notes: This work was supported by the French National Research Agency ANR (project GeoPor, grant ANR-13-JS01-0007-01). The third author has also received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No 647134 GATIPOR)
  • © Copyright 2020 American Mathematical Society
  • Journal: Math. Comp. 90 (2021), 517-563
  • MSC (2010): Primary 65M12, 35K65, 65M15, 65M60
  • DOI: https://doi.org/10.1090/mcom/3577
  • MathSciNet review: 4194153