#12269: coercion and conversion for absolute_field
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Reporter: mstreng | Owner: davidloeffler
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.0
Component: number fields | Keywords: coercion conversion
absolute_field number field structure relative absolute
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Changes (by mstreng):
* type: defect => enhancement
Comment:
Replying to [comment:8 SimonKing]:
> Sorry, I did not answer Marco's question yet.
No problem, it wasn't a very direct question.
> Is it the case that the map is already known at initialisation time?
Don't know, I'll have to dig through the code some more.
> Concerning "coercion or conversion between relative and absolute number
fields", I think there has been at least one thread on sage-nt and also a
trac ticket devoted to that subject.
Thanks, I don't know that ticket/thread. I have found
* [https://groups.google.com/group/sage-
nt/browse_thread/thread/5c376dbf7e99ea97/]
* [https://groups.google.com/group/sage-
nt/browse_thread/thread/32b65a5173f43267/]
* [https://groups.google.com/group/sage-
nt/browse_thread/thread/9108218411e7f0a6/]
The first two are about coercions between number fields, but don't say
anything about relative versus absolute. The third is about conversions,
again no relative versus absolute.
I also did another search on trac, and could only find the tickets I
created last week: #12269 (this ticket) and #12271 (same, but for
relativize).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12269#comment:9>
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