#9138: Categories for all rings
---------------------------------+------------------------------------------
Reporter: jbandlow | Owner: nthiery
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: categories | Keywords: introspection, categories
for rings
Work_issues: Steenrod algebras | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: sage-4.7, #11268, #11139,
#9976, #9944, #11269
---------------------------------+------------------------------------------
Changes (by SimonKing):
* status: needs_review => needs_work
* work_issues: => Steenrod algebras
Comment:
It seems that there is a problem with doctests for the Steenrod algebra.
When I apply the patch on top of sage-4.7.1.rc1, I obtain
{{{
sage: SteenrodAlgebra(2)['x'].category()
Exception raised:
Traceback (most recent call last):
File "/mnt/local/king/SAGE/sage-4.7.1.rc1/local/bin/ncadoctest.py",
line 1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/mnt/local/king/SAGE/sage-4.7.1.rc1/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File "/mnt/local/king/SAGE/sage-4.7.1.rc1/local/bin/ncadoctest.py",
line 1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_1[12]>", line 1, in <module>
SteenrodAlgebra(Integer(2))['x'].category()###line 114:
sage: SteenrodAlgebra(2)['x'].category()
File "/mnt/local/king/SAGE/sage-4.7.1.rc1/local/lib/python/site-
packages/sage/algebras/steenrod/steenrod_algebra.py", line 1037, in
homogeneous_component
basis = self._basis_fcn(n)
File "cachefunc.pyx", line 531, in
sage.misc.cachefunc.CachedFunction.__call__ (sage/misc/cachefunc.c:2227)
File "/mnt/local/king/SAGE/sage-4.7.1.rc1/local/lib/python/site-
packages/sage/algebras/steenrod/steenrod_algebra_bases.py", line 368, in
steenrod_algebra_basis_
if n < 0 or int(n) != n:
ValueError: invalid literal for int() with base 10: 'x'
}}}
So, back to the drawing board...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9138#comment:65>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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