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Relaxation property...
Relaxation property for the adaptivity for ill-posed problems
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- Beilina, Larisa, 1970 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för matematiska vetenskaper, matematik,Department of Mathematical Sciences, Mathematics,Chalmers tekniska högskola,Chalmers University of Technology,University of Gothenburg
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Klibanov, M.V. (författare)
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(creator_code:org_t)
- 2013-02-19
- 2014
- Engelska.
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Ingår i: Applicable Analysis. - : Informa UK Limited. - 0003-6811 .- 1563-504X. ; 93:2, s. 223-253
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Abstract
Ämnesord
Stäng
- Adaptive finite element method (adaptivity) is known to be an effective numerical tool for some ill-posed problems. The key advantage of the adaptivity is the image improvement with local mesh refinements. A rigorous proof of this property is the central part of this paper. In terms of coefficient inverse problems with single measurement data, the authors consider the adaptivity as the second stage of a two-stage numerical procedure. The first stage delivers a good approximation of the exact coefficient without an advanced knowledge of a small neighborhood of that coefficient. This is a necessary element for the adaptivity to start iterations from. Numerical results for the two-stage procedure are presented for both computationally simulated and experimental data.
Ämnesord
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
Nyckelord
- adaptive finite element method
- coefficient inverse problem
- ill-posed problems
- numerical studies
- relaxation property
- adaptive finite element method
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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