#9390: is_galois_relative() not always right
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Reporter: arminstraub | Owner: davidloeffler
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.6.1
Component: number fields | Keywords: galois extension
Author: Francis Clarke | Upstream: N/A
Reviewer: Marco Streng | Merged:
Work_issues: |
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Comment(by fwclarke):
Replying to [comment:8 mstreng]:
> > I can't reproduce this. Actually `is_galois` is not particularly
ubiquitous (and certainly does figure in `gal_reps.py`):
> How could you be so sure about that?
My mistake was that I was using 4.6. The long test in question was
introduced in #8451 which was merged in sage-4.6.1.alpha2. I haven't
checked it fully, but it looks like in this case the function `image_type`
calls `galois_group`, which calls `is_galois`. It seem that `is_galois`
is much more ubiquitous that I thought as it's used in several functions
of the classes `GaloisGroup_v2` and `GaloisGroupElement`. Sorry for not
noticing this before.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9390#comment:9>
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