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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.

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Uniform-in-time superconvergence of the HDG methods for the acoustic wave equation
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by Bernardo Cockburn and Vincent Quenneville-Bélair PDF
Math. Comp. 83 (2014), 65-85 Request permission

Abstract:

We present the first a priori error analysis of the hybridizable discontinuous Galerkin methods for the acoustic equation in the time-continuous case. We show that the velocity and the gradient converge with the optimal order of $k+1$ in the $L^2$-norm uniformly in time whenever polynomials of degree $k \geq 0$ are used. Finally, we show how to take advantage of this local postprocessing to obtain an approximation to the original scalar unknown also converging with order $k+2$ for $k \geq 1$. This puts on firm mathematical ground the numerical results obtained in J. Comput. Phys. 230 (2011), 3695–3718.
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Additional Information
  • Bernardo Cockburn
  • Affiliation: School of Mathematics, University of Minnesota, 206 Church Street S.E., Minneapolis, Minnesota 55455
  • Email: cockburn@math.umn.edu
  • Vincent Quenneville-Bélair
  • Affiliation: School of Mathematics, University of Minnesota, 206 Church Street S.E., Minneapolis, Minnesota 55455
  • Email: vqb@math.umn.edu
  • Received by editor(s): October 14, 2011
  • Received by editor(s) in revised form: January 26, 2012
  • Published electronically: July 16, 2013
  • Additional Notes: The first author was partially supported by the National Science Foundation (Grant DMS-1115331) and by the Minnesota Supercomputing Institute.
  • © Copyright 2013 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Math. Comp. 83 (2014), 65-85
  • MSC (2010): Primary 65M60, 65N30, 65M15, 65M22
  • DOI: https://doi.org/10.1090/S0025-5718-2013-02743-3
  • MathSciNet review: 3120582