#15698: conversion from polynomial fraction to its power series expansion
-------------------------------------+-------------------------------------
Reporter: rws | Owner: rws
Type: enhancement | Status: positive_review
Priority: major | Milestone: sage-6.2
Component: algebra | Resolution:
Keywords: power series, | Merged in:
expansion, fraction | Reviewers: Marc Mezzarobba
Authors: Ralf Stephan | Work issues:
Report Upstream: N/A | Commit:
Branch: | 7913b6f9951e051e7f53e825e0e6d2de95af3730
u/mmezzarobba/15698-series_of_ratpoly| Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Comment (by vbraun):
doctests fail with
{{{
sage -t --long src/sage/rings/power_series_poly.pyx
**********************************************************************
File "src/sage/rings/power_series_poly.pyx", line 987, in
sage.rings.power_series_poly.PowerSeries_poly.__richcmp__.reversion
Failed example:
g(f)
Exception raised:
Traceback (most recent call last):
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 480, in _run
self.execute(example, compiled, test.globs)
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 839, in execute
exec compiled in globs
File "<doctest
sage.rings.power_series_poly.PowerSeries_poly.__richcmp__.reversion[32]>",
line 1, in <module>
g(f)
File "power_series_poly.pyx", line 373, in
sage.rings.power_series_poly.PowerSeries_poly.__call__
(sage/rings/power_series_poly.c:4951)
File "polynomial_element.pyx", line 655, in
sage.rings.polynomial.polynomial_element.Polynomial.__call__
(sage/rings/polynomial/polynomial_element.c:8408)
File "element.pyx", line 1539, in
sage.structure.element.RingElement.__add__
(sage/structure/element.c:13873)
File "coerce.pyx", line 782, in
sage.structure.coerce.CoercionModel_cache_maps.bin_op
(sage/structure/coerce.c:7311)
File "coerce.pyx", line 900, in
sage.structure.coerce.CoercionModel_cache_maps.canonical_coercion
(sage/structure/coerce.c:8549)
...
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/rings/polynomial/polynomial_element_generic.py", line 734,
in __init__
Polynomial_generic_dense.__init__(self, parent, x, check, is_gen)
File "polynomial_element.pyx", line 6914, in
sage.rings.polynomial.polynomial_element.Polynomial_generic_dense.__init__
(sage/rings/polynomial/polynomial_element.c:48031)
File "polynomial_element.pyx", line 209, in
sage.rings.polynomial.polynomial_element.Polynomial.__init__
(sage/rings/polynomial/polynomial_element.c:4700)
RuntimeError: maximum recursion depth exceeded while calling a Python
object
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15698#comment:20>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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