Opened 7 years ago
Closed 23 months ago
#13915 closed enhancement (wontfix)
wrapper for determinant, minpoly, etc. from linbox for sparse matrices
Reported by: | Bouillaguet | Owned by: | jason, was |
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Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |
Component: | linear algebra | Keywords: | linbox, sd75 |
Cc: | cpernet | Merged in: | |
Authors: | Reviewers: | Travis Scrimshaw | |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
Superseeded by #23214.
Currently, computing the determinant, minimum polynomial, characteristic polynomial, etc of sparse matrices over the integers and finite fields switch them to a dense representation, then runs the dense algorithm.
This works, but is quite suboptimal. Linbox packs a few algorithms tailored for sparse matrices, e.g. iterative methods for the determinant, minpoly, etc. These methods have the advantage that they only read the matrix, and are memory efficient.
The aim of this ticket is to make these algorithms available in Sage.
Change History (13)
comment:1 Changed 7 years ago by
comment:2 Changed 7 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:3 Changed 6 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:4 Changed 6 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:5 Changed 6 years ago by
- Milestone changed from sage-6.3 to sage-6.4
comment:6 Changed 4 years ago by
- Cc cpernet added
comment:7 Changed 4 years ago by
- Keywords sd75 added
- Milestone changed from sage-6.4 to sage-7.4
comment:8 Changed 2 years ago by
See #25257 for an initial attempt for rank
.
comment:9 Changed 2 years ago by
- Milestone changed from sage-7.4 to sage-8.2
comment:10 Changed 2 years ago by
- Description modified (diff)
- Milestone changed from sage-8.2 to sage-duplicate/invalid/wontfix
superseeded by #23214. I propose to close this as duplicate
comment:11 Changed 2 years ago by
- Reviewers set to Travis Scrimshaw
- Status changed from new to needs_review
Concur.
comment:12 Changed 2 years ago by
- Status changed from needs_review to positive_review
comment:13 Changed 23 months ago by
- Resolution set to wontfix
- Status changed from positive_review to closed
closing positively reviewed duplicates
Examples of things that are presently bad (where a sparse matrix is converted to a dense representation) :