#9138: Categories for all rings
----------------------------------------------------+-----------------------
Reporter: jbandlow | Owner: nthiery
Type: defect | Status: closed
Priority: major | Milestone:
sage-4.7.2
Component: categories | Resolution: fixed
Keywords: introspection, categories for rings | Work_issues:
Upstream: N/A | Reviewer: Volker
Braun
Author: Simon King | Merged:
sage-4.7.2.alpha3
Dependencies: #11316 #11342 |
----------------------------------------------------+-----------------------
Changes (by jdemeyer):
* dependencies: #11268 #11139 #9976 #9944 #11269 #11316 #11342 => #11316
#11342
Old description:
> Introspection is failing on polynomial rings:
> {{{
> sage: R.<x> = QQ[]
> sage: R.su<tab>
> R.sum R.summation
> R.summation_from_element_class_add
> sage: R.sum?
> Object `R.sum` not found.
> sage: R.sum()
> ---------------------------------------------------------------------------
> AttributeError Traceback (most recent call
> last)
> }}}
>
> This is because polynomial rings do not yet set their category properly:
> {{{
> sage: QQ[x]._test_category()
> ------------------------------------------------------------
> Traceback (most recent call last):
> ...
> AssertionError: category of self improperly initialized
> }}}
>
> See http://groups.google.com/group/sage-
> devel/browse_thread/thread/4780192a11a8b591 for more discussion.
>
> Many other rings are not properly initialised as well. The aim of this
> ticket is to change that.
>
> Depends on #11268, #11139, #9976, #9944, #11269
>
> Apply [attachment:9138_flat.patch]
New description:
Introspection is failing on polynomial rings:
{{{
sage: R.<x> = QQ[]
sage: R.su<tab>
R.sum R.summation
R.summation_from_element_class_add
sage: R.sum?
Object `R.sum` not found.
sage: R.sum()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
}}}
This is because polynomial rings do not yet set their category properly:
{{{
sage: QQ[x]._test_category()
------------------------------------------------------------
Traceback (most recent call last):
...
AssertionError: category of self improperly initialized
}}}
See http://groups.google.com/group/sage-
devel/browse_thread/thread/4780192a11a8b591 for more discussion.
Many other rings are not properly initialised as well. The aim of this
ticket is to change that.
Apply [attachment:9138_flat.patch]
See #11900 for a follow-up fixing some speed regressions.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9138#comment:109>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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