#18836: Make refine_embedding into a method of number fields instead of
stand-alone
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Reporter: cremona | Owner:
Type: enhancement | Status: new
Priority: minor | Milestone: sage-6.8
Component: number fields | Keywords:
Merged in: | Authors: John Cremona
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The stand-alone function {{{refine_embedding}} has been around for a
while, right at the bottom of sage/rings/number_field/number_field.py, not
imported into the global namespace and hence having to be imported
whenever needed. More seriously, it is very easy for users and developers
to miss its existence entirely! (Proof: today I learned that one of my
students needed such a function and wrote his own since he did not know
that I had written the existing function a few years ago!)
I am moving the function into the class NumberField, so that one can now
say
{{{
embx = K.refine_embedding(emb, prec)
}}}
instead of
{{{
from sage.rings.number_field.number_field import refine_embedding
embx = refine_embedding(emb,prec)
}}}
There are only about 3 places in the Sage library where this is used,
which need small changes.
--
Ticket URL: <http://trac.sagemath.org/ticket/18836>
Sage <http://www.sagemath.org>
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