#11553: Matrix morphism additions
------------------------------+---------------------------------------------
Reporter: rbeezer | Owner: jason, was
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-4.7.2
Component: linear algebra | Keywords:
Work_issues: | Upstream: N/A
Reviewer: Martin Raum | Author: Rob Beezer
Merged: | Dependencies: #11552, #10793
------------------------------+---------------------------------------------
Changes (by rbeezer):
* status: needs_work => needs_review
Old description:
> Adds three methods to the matrix morphism class:
>
> 1. {{{is_bijective()}}}
> 1. {{{is_identity()}}}
> 1. {{{inverse()}}}
>
> I did not notice that {{{__invert___}}} via ~ was available by using tab-
> completion, which should explain the last one.
>
> If there is a theme, it is better support for compositions of these
> morphisms.
>
> '''Depends'''
> 1. #11552
>
> '''Apply:'''
> 1. [attachment:trac_11553-matrix-morphisms-additions-v3.patch]
> 2. [attachment:trac-11553-matrix-morphisms-additions-review.patch]
New description:
Adds three methods to the matrix morphism class:
1. {{{is_bijective()}}}
1. {{{is_identity()}}}
1. {{{inverse()}}}
I did not notice that {{{__invert___}}} via ~ was available by using tab-
completion, which should explain the last one.
If there is a theme, it is better support for compositions of these
morphisms.
'''Depends'''
1. #11552
'''Apply:'''
1. [attachment:trac_11553-matrix-morphisms-additions-v4.patch]
2. [attachment:trac-11553-matrix-morphisms-additions-review.patch]
3. [attachment:trac_11553-matrix-morphisms-doctests.patch]
--
Comment:
4.7.2.alpha1 + #11552 + #10793
Rebased main patch to make v4 patch. This was a trivial change.
Got bit by the nasty bug that is fixed in #10793, so two doctests needed
to have their matrix dimensions reversed (maybe not really transposes
''per se''). This minor change to the code is on the "doctests" patch and
should require a (simple) review.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11553#comment:10>
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