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Fast direct solvers for integral equations in complex three-dimensional domains

Published online by Cambridge University Press:  08 May 2009

Leslie Greengard
Affiliation:
Courant Instiute of Mathematical Sciences, New York University, New York, NY 10012, USAE-mail:greengard@courant.nyu.edu
Denis Gueyffier
Affiliation:
Courant Institute of Mathematical Sciences, New York University, New York, NY 10012, USAE-mail:dgueyffier@giss.nasa.gov
Per-Gunnar Martinsson
Affiliation:
Department of Applied Mathematics, University of Colorado at Boulder, 526 UCB, Boulder, CO 80309-0526, USAE-mail:per-gunnar.martinsson@colorado.edu
Vladimir Rokhlin
Affiliation:
Department of Mathematics and Department of Computer Science, Yale University, 10 Hillhouse Avenue, New Haven CT 06511, USAE-mail:rokhlin@cs.yale.edu
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Abstract

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Methods for the solution of boundary integral equations have changed significantly during the last two decades. This is due, in part, to improvements in computer hardware, but more importantly, to the development of fast algorithms which scale linearly or nearly linearly with the number of degrees of freedom required. These methods are typically iterative, based on coupling fast matrix-vector multiplication routines with conjugate-gradient-type schemes. Here, we discuss methods that are currently under development for the fast, direct solution of boundary integral equations in three dimensions. After reviewing the mathematical foundations of such schemes, we illustrate their performance with some numerical examples, and discuss the potential impact of the overall approach in a variety of settings.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2009