Opened 4 years ago
Closed 3 years ago
#26655 closed defect (fixed)
Convert PARI matrices over finite fields into Sage matrix spaces
Reported by:  pbruin  Owned by:  

Priority:  minor  Milestone:  sage8.7 
Component:  interfaces  Keywords:  matrix, finite field, pari 
Cc:  Merged in:  
Authors:  Peter Bruin  Reviewers:  Jeroen Demeyer 
Report Upstream:  N/A  Work issues:  
Branch:  32a6527 (Commits, GitHub, GitLab)  Commit:  32a6527eacd2d11e3364c5b6d0ec469de2f0cb28 
Dependencies:  Stopgaps: 
Description (last modified by )
It should be possible to convert PARI matrices over finite fields into a Sage matrix space:
sage: F.<a> = GF(9) sage: M = MatrixSpace(F, 2, 2) sage: A = M.random_element() sage: M(A.__pari__()) Traceback (most recent call last): ... NameError: name 'a' is not defined
This ticket deliberately does not attempt to fix conversion of PARI t_VEC
/t_COL
etc. to Sage matrices. Maybe this should even be deprecated (there is a risk of confusion since Sage uses rowmajor order and PARI uses columnmajor order).
Change History (7)
comment:1 Changed 4 years ago by
 Branch set to u/pbruin/26655PARI_matrix_conversion
 Commit set to fabc45f76a7d71c09dd75c7f35449cb68949d4c0
 Description modified (diff)
 Status changed from new to needs_review
comment:2 Changed 3 years ago by
 Reviewers set to Jeroen Demeyer
 Status changed from needs_review to needs_work
comment:3 Changed 3 years ago by
 Commit changed from fabc45f76a7d71c09dd75c7f35449cb68949d4c0 to 32a6527eacd2d11e3364c5b6d0ec469de2f0cb28
Branch pushed to git repo; I updated commit sha1. New commits:
32a6527  Trac 26655: use list comprehension instead of map

comment:4 Changed 3 years ago by
 Status changed from needs_work to needs_review
Good point, thanks. Fixed in the latest commit.
comment:5 Changed 3 years ago by
 Status changed from needs_review to positive_review
comment:6 Changed 3 years ago by
 Milestone changed from sage8.5 to sage8.7
comment:7 Changed 3 years ago by
 Branch changed from u/pbruin/26655PARI_matrix_conversion to 32a6527eacd2d11e3364c5b6d0ec469de2f0cb28
 Resolution set to fixed
 Status changed from positive_review to closed
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You should use list comprehensions instead of
map()
because it's more readable and it works the same way on Python 3.