Single-Element Tearing and Modification of Sparse Symmetric Systems
Bunch, James R.; Rose, Donald J.
Tearing and modification obtains the ssolution of a linear system synthetically by first solving a slightly different ("torn") system and then modifying that solution. We show that single-element tearing of symmetric systems is rarely advantageous when the modified system is solved by elimination, and we classify those systems for which it is advantageous.
computer science; technical report
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