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Mathematics of Computation

Published by the American Mathematical Society, the Mathematics of Computation (MCOM) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

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

The 2020 MCQ for Mathematics of Computation is 1.98.

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An extension of the Crouzeix–Raviart space to general meshes with application to quasi-incompressible linear elasticity and Stokes flow
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by Daniele A. Di Pietro and Simon Lemaire PDF
Math. Comp. 84 (2015), 1-31 Request permission


In this work we introduce a discrete functional space on general polygonal or polyhedral meshes which mimics two important properties of the standard Crouzeix–Raviart space, namely the continuity of mean values at interfaces and the existence of an interpolator which preserves the mean value of the gradient inside each element. The construction borrows ideas from both Cell Centered Galerkin and Hybrid Finite Volume methods. The discrete function space is defined from cell and face unknowns by introducing a suitable piecewise affine reconstruction on a (fictitious) pyramidal subdivision of the original mesh. Two applications are considered in which the discrete space plays an important role, namely \inparaenum[(i)]

the design of a locking-free primal (as opposed to mixed) method for quasi-incompressible planar elasticity on general polygonal meshes;

the design of an inf-sup stable method for the Stokes equations on general polygonal or polyhedral meshes. In this context, we also propose a general modification, applicable to any suitable discretization, which guarantees that the velocity approximation is unaffected by the presence of large irrotational body forces provided a Helmholtz decomposition of the right-hand side is available. \endinparaenum The relation between the proposed methods and classical finite volume and finite element schemes on standard meshes is investigated. Finally, similar ideas are exploited to mimic key properties of the lowest-order Raviart–Thomas space on general polygonal or polyhedral meshes.

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Additional Information
  • Daniele A. Di Pietro
  • Affiliation: Université Montpellier 2, I3M, 34057 Montpellier CEDEX 5, France
  • Email:
  • Simon Lemaire
  • Affiliation: IFP Énergies nouvelles, Department of Applied Mathematics, 1 & 4 avenue de Bois-Préau, 92852 Rueil-Malmaison CEDEX, France
  • Email:
  • Received by editor(s): November 19, 2012
  • Received by editor(s) in revised form: June 5, 2013
  • Published electronically: August 4, 2014
  • © Copyright 2014 American Mathematical Society
  • Journal: Math. Comp. 84 (2015), 1-31
  • MSC (2010): Primary 65N08, 65N30; Secondary 74B05, 76D07
  • DOI:
  • MathSciNet review: 3266951