Mathematics of Computation

Nonsmooth Data Error Estimates for Approximations of an Evolution Equation with a Positive-Type Memory Term

Author(s): Ch. Lubich; I. H. Sloan; V. Thomée.
Journal: Math. Comp. 65 (1996), 1-17.
MSC (1991): Primary 45K05, 65M60, 65D32
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Abstract: We study the numerical approximation of an integro-differential equation which is intermediate between the heat and wave equations. The proposed discretization uses convolution quadrature based on the first- and second-order backward difference methods in time, and piecewise linear finite elements in space. Optimal-order error bounds in terms of the initial data and the inhomogeneity are shown for positive times, without assumptions of spatial regularity of the data.

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Retrieve articles in Mathematics of Computation with MSC (1991): 45K05, 65M60, 65D32

Ch. Lubich
Affiliation: Mathematisches Institut, Universität Tübingen, Auf der Morgenstelle 10, D-72076 Tübingen, Germany
Email: lubich@na.mathematik.uni-tuebingen.de

I. H. Sloan
Affiliation: School of Mathematics, University of New South Wales, Sydney 2052, Australia
Email: I.Sloan@unsw.edu.au

V. Thomée
Affiliation: Department of Mathematics, Chalmers University of Technology, S-412 96 Göteborg, Sweden
Email: thomee@math.chalmers.se

DOI: 10.1090/S0025-5718-96-00677-1
PII: S 0025-5718(96)00677-1
Keywords: Evolution equation, memory term, nonsmooth data, convolution quadrature
Received by editor(s): August 30, 1994
Copyright of article: Copyright 1996, American Mathematical Society

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