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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.

 

Space–time least–squares isogeometric method and efficient solver for parabolic problems
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by Monica Montardini, Matteo Negri, Giancarlo Sangalli and Mattia Tani HTML | PDF
Math. Comp. 89 (2020), 1193-1227 Request permission

Abstract:

In this paper, we propose a space-time least-squares isogeometric method to solve parabolic evolution problems, well suited for high-degree smooth splines in the space-time domain. We focus on the linear solver and its computational efficiency: thanks to the proposed formulation and to the tensor-product construction of space-time splines, we can design a preconditioner whose application requires the solution of a Sylvester-like equation, which is performed efficiently by the fast diagonalization method. The preconditioner is robust w.r.t. spline degree and mesh size. The computational time required for its application, for a serial execution, is almost proportional to the number of degrees-of-freedom and independent of the polynomial degree. The proposed approach is also well-suited for parallelization.
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Additional Information
  • Monica Montardini
  • Affiliation: Università di Pavia, Dipartimento di Matematica “F. Casorati”, Via A. Ferrata 5, 27100 Pavia, Italy
  • MR Author ID: 1201262
  • Email: monica.montardini01@universitadipavia.it
  • Matteo Negri
  • Affiliation: Università di Pavia, Dipartimento di Matematica “F. Casorati”, Via A. Ferrata 5, 27100 Pavia, Italy
  • Email: matteo.negri@unipv.it
  • Giancarlo Sangalli
  • Affiliation: Università di Pavia, Dipartimento di Matematica “F. Casorati”, Via A. Ferrata 5, 27100 Pavia, Italy; and IMATI-CNR “Enrico Magenes”, Via A. Ferrata 1, 27100 Pavia, Italy
  • MR Author ID: 663454
  • Email: giancarlo.sangalli@unipv.it
  • Mattia Tani
  • Affiliation: Università di Pavia, Dipartimento di Matematica “F. Casorati”, Via A. Ferrata 5, 27100 Pavia, Italy
  • MR Author ID: 1023408
  • Email: mattia.tani@imati.cnr.it
  • Received by editor(s): September 27, 2018
  • Received by editor(s) in revised form: April 20, 2019, and June 5, 2019
  • Published electronically: September 24, 2019
  • Additional Notes: The first, third and fourth authors are members of the Gruppo Nazionale Calcolo Scientifico-Istituto Nazionale di Alta Matematica (GNCS-INDAM)
    The second author is member of the Gruppo Nazionale per l’Analisi Matematica, la Probabilità e le loro Applicazioni-Istituto Nazionale di Alta Matematica (GNAMPA-INDAM). This support is gratefully acknowledged.
    This research was partially supported by the European Research Council through the FP7 Ideas Consolidator Grant HIGEOM n.616563, and by the Italian Ministry of Education, University and Research (MIUR) through the “Dipartimenti di Eccellenza Program (2018-2022) - Dept. of Mathematics, University of Pavia”.
  • © Copyright 2019 American Mathematical Society
  • Journal: Math. Comp. 89 (2020), 1193-1227
  • MSC (2010): Primary 65F08, 65M60, 65D07; Secondary 35K05
  • DOI: https://doi.org/10.1090/mcom/3471
  • MathSciNet review: 4063316