Wavelet Approximations on Closed Surfaces and their Application to Boundary-Value Problems of Potential Theory

  • Wavelets on closed surfaces in Euclidean space R3 are introduced starting from a scale discrete wavelet transform for potentials harmonic down to a spherical boundary. Essential tools for approximation are integration formulas relating an integral over the sphere to suitable linear combinations of functional values (resp. normal derivatives) on the closed surface under consideration. A scale discrete version of multiresolution is described for potential functions harmonic outside the closed surface and regular at infinity. Furthermore, an exact fully discrete wavelet approximation is developed in case of band-limited wavelets. Finally, the role of wavelets is discussed in three problems, namely (i) the representation of a function on a closed surface from discretely given data, (ii) the (discrete) solution of the exterior Dirichlet problem, and (iii) the (discrete) solution of the exterior Neumann problem.

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Metadaten
Author:Willi Freeden, F. Schneider
URN (permanent link):urn:nbn:de:hbz:386-kluedo-5753
Serie (Series number):Berichte der Arbeitsgruppe Technomathematik (AGTM Report) (171)
Document Type:Preprint
Language of publication:English
Year of Completion:1998
Year of Publication:1998
Publishing Institute:Technische Universität Kaiserslautern
Source:Math. Meth. in the Apl. Sci., 21, 129-165 (1998)
Faculties / Organisational entities:Fachbereich Mathematik
DDC-Cassification:510 Mathematik

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