Beware of unperturbed modified incomplete factorizations:
Abstract: "A short note describes the possible dangers of combining (unperturbed) modified incomplete factorizations with certain ordering strategies of the matrix. Sufficient conditions are given for orderings that lead to zero or vanishing pivots, and numerical tests are given illustrating th...
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Urbana, Ill.
1991
|
| Schriftenreihe: | Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report
1109 |
| Schlagworte: | |
| Zusammenfassung: | Abstract: "A short note describes the possible dangers of combining (unperturbed) modified incomplete factorizations with certain ordering strategies of the matrix. Sufficient conditions are given for orderings that lead to zero or vanishing pivots, and numerical tests are given illustrating the latter phenomemon [sic]. In that case introducing perturbations of O(h²) seems to alleviate the problem." |
| Beschreibung: | 9 S. |
Internformat
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| 100 | 1 | |a Eijkhout, Victor |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Beware of unperturbed modified incomplete factorizations |c Victor Eijkhout |
| 264 | 1 | |a Urbana, Ill. |c 1991 | |
| 300 | |a 9 S. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report |v 1109 | |
| 520 | 3 | |a Abstract: "A short note describes the possible dangers of combining (unperturbed) modified incomplete factorizations with certain ordering strategies of the matrix. Sufficient conditions are given for orderings that lead to zero or vanishing pivots, and numerical tests are given illustrating the latter phenomemon [sic]. In that case introducing perturbations of O(h²) seems to alleviate the problem." | |
| 650 | 4 | |a Factorization (Mathematics) | |
| 650 | 4 | |a Perturbation (Mathematics) | |
| 830 | 0 | |a Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report |v 1109 |w (DE-604)BV008930033 |9 1109 | |
| 999 | |a oai:aleph.bib-bvb.de:BVB01-006133929 | ||
Datensatz im Suchindex
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| author | Eijkhout, Victor |
| author_facet | Eijkhout, Victor |
| author_role | aut |
| author_sort | Eijkhout, Victor |
| author_variant | v e ve |
| building | Verbundindex |
| bvnumber | BV009224756 |
| ctrlnum | (OCoLC)24660684 (DE-599)BVBBV009224756 |
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| id | DE-604.BV009224756 |
| illustrated | Not Illustrated |
| indexdate | 2024-07-09T17:33:25Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-006133929 |
| oclc_num | 24660684 |
| open_access_boolean | |
| owner | DE-29T |
| owner_facet | DE-29T |
| physical | 9 S. |
| publishDate | 1991 |
| publishDateSearch | 1991 |
| publishDateSort | 1991 |
| record_format | marc |
| series | Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report |
| series2 | Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report |
| spelling | Eijkhout, Victor Verfasser aut Beware of unperturbed modified incomplete factorizations Victor Eijkhout Urbana, Ill. 1991 9 S. txt rdacontent n rdamedia nc rdacarrier Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report 1109 Abstract: "A short note describes the possible dangers of combining (unperturbed) modified incomplete factorizations with certain ordering strategies of the matrix. Sufficient conditions are given for orderings that lead to zero or vanishing pivots, and numerical tests are given illustrating the latter phenomemon [sic]. In that case introducing perturbations of O(h²) seems to alleviate the problem." Factorization (Mathematics) Perturbation (Mathematics) Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report 1109 (DE-604)BV008930033 1109 |
| spellingShingle | Eijkhout, Victor Beware of unperturbed modified incomplete factorizations Center for Supercomputing Research and Development <Urbana, Ill.>: CSRD report Factorization (Mathematics) Perturbation (Mathematics) |
| title | Beware of unperturbed modified incomplete factorizations |
| title_auth | Beware of unperturbed modified incomplete factorizations |
| title_exact_search | Beware of unperturbed modified incomplete factorizations |
| title_full | Beware of unperturbed modified incomplete factorizations Victor Eijkhout |
| title_fullStr | Beware of unperturbed modified incomplete factorizations Victor Eijkhout |
| title_full_unstemmed | Beware of unperturbed modified incomplete factorizations Victor Eijkhout |
| title_short | Beware of unperturbed modified incomplete factorizations |
| title_sort | beware of unperturbed modified incomplete factorizations |
| topic | Factorization (Mathematics) Perturbation (Mathematics) |
| topic_facet | Factorization (Mathematics) Perturbation (Mathematics) |
| volume_link | (DE-604)BV008930033 |
| work_keys_str_mv | AT eijkhoutvictor bewareofunperturbedmodifiedincompletefactorizations |