#14239: symbolic radical expression for algebraic number
-------------------------------------+-------------------------------------
Reporter: gagern | Owner: davidloeffler
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.5
Component: number fields | Resolution:
Keywords: | Merged in:
Authors: Martin von Gagern | Reviewers: Marc Mezzarobba,
Report Upstream: N/A | Jeroen Demeyer
Branch: | Work issues:
u/gagern/ticket/14239 | Commit:
Dependencies: #17495, #16964 | 4626286463c734f931ecc7405285dc7bc1b58772
| Stopgaps:
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Changes (by vdelecroix):
* status: needs_review => needs_work
Comment:
What is the point of
{{{
- Test :trac:`14895`::
-
- sage: K.<sqrt2> = QuadraticField(2)
+ sage: K.<sqrt2> = QuadraticField(2) # :trac:`14895`
}}}
I really do not like the attribute symbolic. Why this result needs to be
cached? You can possibly cache '''in the parent''' a symbolic version of
the generator.
The fact that `SR(a)` when `a` is a number field element returns possibly
a numerical approximation is a very bad regression. You switch from
something exact to something approximative.
--
Ticket URL: <http://trac.sagemath.org/ticket/14239#comment:99>
Sage <http://www.sagemath.org>
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