#15027: Inconsistent primitive_root_of_unity for number fields
-------------------------------------+--------------------------
Reporter: cremona | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone: sage-5.12
Component: number fields | Resolution:
Keywords: number field unit | Merged in:
Authors: John Cremona | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Dependencies:
Stopgaps: |
-------------------------------------+--------------------------
Comment (by fwclarke):
John,
The patch doesn't seem to eliminate the other inconsistency: between
`-1/2*a + 1/2` and `1/2*a + 1/2`. For when `primitive_root_of_unity` is
called before `unit_group` it selects the primitive with the shortest
string representation. On the other hand, `UnitGroup.__init__` just uses
the element given by Pari's `nfrootsof1`. There are clearly a variety of
ways to sort this out.
--
Ticket URL: <http://trac.sagemath.org/ticket/15027#comment:3>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
