#11068: Basic implementation of one- and twosided ideals of non-commutative
rings,
and quotients by twosided ideals
---------------------------+------------------------------------------------
Reporter: SimonKing | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.2
Component: algebra | Keywords: onesided twosided ideal
noncommutative ring sd32
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #10961, #9138, #11115, #11342
---------------------------+------------------------------------------------
Comment(by john_perry):
I'm not sure this is an error, but here goes:
{{{
sage: QA.<i,j,k> = QuaternionAlgebra(2,3)
sage: QI = QA*[i]*QA
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
...
AttributeError: 'QuaternionFractionalIdeal_rational' object has no
attribute '_scale'
}}}
This seems odd, since
{{{
sage: QI = QA.ideal([i])
}}}
works fine, '''but''' the discussion in #11342 makes me wonder if this is
because, in the second case, QI is a "fractional ideal":
{{{
sage: QI
Fractional ideal (i,)
}}}
This is beyond my expertise, so I have to ask: is this appropriate
behavior?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11068#comment:29>
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