#1956: implement multivariate truncated power series arithmetic
-------------------------------------------+--------------------------------
Reporter: was | Owner: pernici
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: commutative algebra | Keywords: multivariate
power series
Work_issues: | Upstream: N/A
Reviewer: Martin Albrecht, Simon King | Author: Niles Johnson
Merged: | Dependencies:
-------------------------------------------+--------------------------------
Changes (by jdemeyer):
* status: needs_review => needs_work
Comment:
Please rebase properly to sage-4.7.rc2:
{{{
sage -t -force_lib
devel/sage/sage/rings/multi_power_series_ring_element.py
**********************************************************************
File "/mnt/usb1/scratch/jdemeyer/merger/sage-4.7.1.alpha1/devel/sage-
main/sage/rings/multi_power_series_ring_element.py", line 1299:
sage: f.sqrt()
Expected:
Traceback (most recent call last):
...
AttributeError:
'sage.rings.polynomial.multi_polynomial_libsingular.MPolynomial_libsingular'
object has no attribute 'sqrt'
Got:
Traceback (most recent call last):
File
"/mnt/usb1/scratch/jdemeyer/merger/sage-4.7.1.alpha1/local/bin/ncadoctest.py",
line 1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File
"/mnt/usb1/scratch/jdemeyer/merger/sage-4.7.1.alpha1/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File
"/mnt/usb1/scratch/jdemeyer/merger/sage-4.7.1.alpha1/local/bin/ncadoctest.py",
line 1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_39[4]>", line 1, in <module>
f.sqrt()###line 1299:
sage: f.sqrt()
File
"/mnt/usb1/scratch/jdemeyer/merger/sage-4.7.1.alpha1/local/lib/python
/site-packages/sage/rings/multi_power_series_ring_element.py", line 1304,
in sqrt
return self.parent(self._bg_value.sqrt())
File "power_series_ring_element.pyx", line 1205, in
sage.rings.power_series_ring_element.PowerSeries.sqrt
(sage/rings/power_series_ring_element.c:8919)
s = u[0].sqrt(extend=False)
File "element.pyx", line 2003, in
sage.structure.element.CommutativeRingElement.sqrt
(sage/structure/element.c:14899)
File "element.pyx", line 1906, in
sage.structure.element.CommutativeRingElement.is_square
(sage/structure/element.c:14740)
NotImplementedError: is_square() not implemented for elements of
Multivariate Polynomial Ring in a, b over Integer Ring
**********************************************************************
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/1956#comment:130>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
