Minimal storage band elimination:

A variation of Gaussian elimination is presented for solving band systems of linear equations on computers with limited core storage, without the use of auxiliary storage such as disk or tape. The method is based on the somewhat unusual idea of recomputing rather than saving most nonzero coefficient...

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Bibliographic Details
Main Authors: Eisenstat, Stanley C. (Author), Schultz, Martin H. (Author), Sherman, A. H. (Author)
Format: Book
Language:English
Published: [New Haven, Conn.] 1977 circa
Series:Yale University <New Haven, Conn.> / Department of Computer Science: Research report 105
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Summary:A variation of Gaussian elimination is presented for solving band systems of linear equations on computers with limited core storage, without the use of auxiliary storage such as disk or tape. The method is based on the somewhat unusual idea of recomputing rather than saving most nonzero coefficients in the reduced triangular system, thus trading an increase in work for a decrease in storage. For a five-point problem on an n x n grid, the storage required is approx. n-squared versus approx. n-cubed for band elimination, while surprisingly the work required at most doubles. (Author).
Physical Description:16 S.

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