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An Incomplete Factorization Technique for Positive Definite Linear Systems
| Content Provider | Scilit |
|---|---|
| Author | Manteuffel, T. A. |
| Copyright Year | 1980 |
| Description | This paper describes a technique for solving the large sparse symmetric linear systems that arise from the application of finite element methods. The technique combines an incomplete factorization method called the shifted incomplete Cholesky factorization with the method of generalized conjugate gradients. The shifted incomplete Cholesky factorization produces a splitting of the matrix A that is dependent upon a parameter . It is shown that if A is positive definite, then there is some for which this splitting is possible and that this splitting is at least as good as the Jacobi splitting. The method is shown to be more efficient on a set of test problems than either direct methods or explicit iteration schemes. |
| Related Links | https://www.ams.org/mcom/1980-34-150/S0025-5718-1980-0559197-0/S0025-5718-1980-0559197-0.pdf |
| Ending Page | 497 |
| Page Count | 25 |
| Starting Page | 473 |
| ISSN | 00255718 |
| e-ISSN | 10886842 |
| DOI | 10.2307/2006097 |
| Journal | Mathematics of Computation |
| Issue Number | 150 |
| Volume Number | 34 |
| Language | English |
| Publisher | Duke University Press |
| Publisher Date | 1980-04-01 |
| Access Restriction | Open |
| Subject Keyword | Mathematical Physics Cholesky Factorization Incomplete Cholesky Positive Definite Shifted Incomplete Incomplete Factorization Alpha |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Algebra and Number Theory Computational Mathematics |
