#14752: typo causes failure in nonsplit Cartan image for elliptic curve Galois
representation
-----------------------------------------+----------------------------------
Reporter: cremona | Owner: cremona
Type: defect | Status: new
Priority: minor | Milestone: sage-5.11
Component: elliptic curves | Resolution:
Keywords: galois representation | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
-----------------------------------------+----------------------------------
Comment (by cremona):
The patch fixes the two typos and adds a doctest to show that the original
case now works. In addition, I ran the following script:
{{{
for E in cremona_curves([11..300000]):
D = E.discriminant()
cm = E.has_cm()
rho = E.galois_representation()
lab = E.label()
for p in primes_first_n(15):
if not cm or not p.divides(D):
print lab,p,rho.image_type(p)
}}}
with 5.10.rc2 + database_cremona_ellcurve-20121022.spkg and every curve in
the database runs without crashing.
A future task is to check that the output agrees with that of Sutherland's
independent C program.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14752#comment:1>
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.
