#19225: cartesian product of algebra has troubles with base_ring
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Reporter: dkrenn | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: categories | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by dkrenn):
* cc: behackl (added)
Old description:
> {{{
> sage: cartesian_product((QQ['z'],))
> Traceback (most recent call last)
> ...
> AttributeError: 'NoneType' object has no attribute
> '_is_category_initialized'
> }}}
New description:
{{{
sage: cartesian_product((QQ['z'],))
Traceback (most recent call last)
...
/local/dakrenn/sage/6.9.beta6/local/lib/python2.7/site-
packages/sage/categories/unital_algebras.pyc in __init_extra__(self)
--> 107 H = Hom(base_ring, self, Rings()) # TODO: non
associative ring!
...
AttributeError: 'NoneType' object has no attribute
'_is_category_initialized'
}}}
--
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Ticket URL: <http://trac.sagemath.org/ticket/19225#comment:2>
Sage <http://www.sagemath.org>
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