#12005: Relativize should take one 'name' if a morphism is given
-------------------------------------+-------------------------------------
Reporter: jdemeyer | Owner: davidloeffler
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.5
Component: number fields | Resolution:
Keywords: | Merged in:
Authors: Alex Ghitza | Reviewers: Jeroen Demeyer
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/ticket/12005 | 87d3531f1457e2e768102b143bfd8cb3ab72e66e
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by jdemeyer):
* status: positive_review => needs_work
Comment:
{{{
sage -t --long src/sage/schemes/elliptic_curves/ell_field.py
**********************************************************************
File "src/sage/schemes/elliptic_curves/ell_field.py", line 631, in
sage.schemes.elliptic_curves.ell_field.EllipticCurve_field.descend_to
Failed example:
EF = E.descend_to(F); EF
Exception raised:
Traceback (most recent call last):
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 488, in _run
self.compile_and_execute(example, compiler, test.globs)
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 850, in compile_and_execute
exec(compiled, globs)
File "<doctest
sage.schemes.elliptic_curves.ell_field.EllipticCurve_field.descend_to[5]>",
line 1, in <module>
EF = E.descend_to(F); EF
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/schemes/elliptic_curves/ell_field.py", line 742, in
descend_to
dlist = t.descend_mod_power(K,2)
File "sage/rings/number_field/number_field_element.pyx", line 3605,
in
sage.rings.number_field.number_field_element.NumberFieldElement.descend_mod_power
(build/cythonized/sage/rings/number_field/number_field_element.cpp:30743)
LK = L.relativize(f, names='b')
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/rings/number_field/number_field_rel.py", line 2439, in
relativize
L = K.relativize(beta, names)
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/rings/number_field/number_field.py", line 7840, in
relativize
return L.extension(f, names[0], structure=structure)
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/rings/number_field/number_field.py", line 4581, in extension
return NumberField_relative(self, poly, str(name), check=check,
embedding=embedding, latex_name=latex_name, structure=structure)
File "/usr/local/src/sage-git/local/lib/python2.7/site-
packages/sage/rings/number_field/number_field_rel.py", line 261, in
__init__
raise ValueError("Base field and extension cannot have the same
name")
ValueError: Base field and extension cannot have the same name
**********************************************************************
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/12005#comment:12>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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