#20951: Fix Relative Field Extensions
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       Reporter:  jlavauzelle        |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-7.3
      Component:  coding theory      |   Resolution:
       Keywords:                     |    Merged in:
        Authors:  Julien Lavauzelle  |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
   Dependencies:                     |     Stopgaps:
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Changes (by {'newvalue': u'Julien Lavauzelle', 'oldvalue': ''}):

 * status:  new => needs_review
 * author:   => Julien Lavauzelle
 * component:  PLEASE CHANGE => coding theory
 * branch:  u/jlavauzelle/fix_relative_field_extensions =>
 * type:  PLEASE CHANGE => enhancement


Old description:



New description:

 This tickets aims at fixing some minors bugs in the experimental class
 `RelativeFiniteFieldExtension`.

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Comment:

 Hi,

 I fixed ambiguity in the documentation of some functions. I also fixed a
 minor bug in the method `relative_field_representation`.

 I added a function which basically invert the relative field embedding (I
 mean, given an absolute field element `x` which actually lies in the
 relative field, the function cast `x` into the relative field).

 Didn't check the other methods.

 Open for review.

 Julien

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Ticket URL: <https://trac.sagemath.org/ticket/20951#comment:2>
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