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A continuous/discontinuous Galerkin method and a priori error estimates for the biharmonic problem on surfaces
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- Larsson, Karl, 1981- (author)
- Umeå universitet,Institutionen för matematik och matematisk statistik
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- Larson, Mats G, 1968- (author)
- Umeå universitet,Institutionen för matematik och matematisk statistik
- (creator_code:org_t)
- American Mathematical Society (AMS), 2017
- 2017
- English.
- In: Mathematics of Computation. - : American Mathematical Society (AMS). - 0025-5718 .- 1088-6842. ; 86:308, s. 2613-2649
- Journal article (peer-reviewed)
Abstract
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- We present a continuous/discontinuous Galerkin method for approximating solutions to a fourth order elliptic PDE on a surface embedded in R-3. A priori error estimates, taking both the approximation of the surface and the approximation of surface differential operators into account, are proven in a discrete energy norm and in L-2 norm. This can be seen as an extension of the formalism and method originally used by Dziuk ( 1988) for approximating solutions to the Laplace-Beltrami problem, and within this setting this is the first analysis of a surface finite element method formulated using higher order surface differential operators. Using a polygonal approximation inverted right perpendicular(h) of an implicitly defined surface inverted right perpendicular we employ continuous piecewise quadratic finite elements to approximate solutions to the biharmonic equation on inverted right perpendicular. Numerical examples on the sphere and on the torus confirm the convergence rate implied by our estimates.
Subject headings
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
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- art (subject category)
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