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|a Strang, Gilbert
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|a Massachusetts Institute of Technology. Department of Mathematics
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|a Strang, Gilbert
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|a Three steps on an open road
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|b American Institute of Mathematical Sciences,
|c 2013-10-16T16:24:46Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/81407
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|a This note describes three recent factorizations of banded invertible infinite matrices: 1. If A has a banded inverse: A = BC with block--diagonal factors B and C. 2. Permutations factor into a shift times N<2w tridiagonal permutations. 3. A = LPU with lower triangular L, permutation P, upper triangular U. We include examples and references and outlines of proofs.
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|a National Science Foundation (U.S.) (Grant 1023152)
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|a en_US
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|a Article
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|t Inverse Problems and Imaging
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