#12630: Add representations of quivers and quiver algebras to sage
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Reporter: JStarx | Owner:
Type: enhancement | AlexGhitza
Priority: major | Status:
Component: algebra | needs_work
Keywords: algebra, quiver, module, | Milestone: sage-5.12
days49 | Resolution:
Authors: Jim Stark, Simon King, | Merged in:
Mathieu Guay-Paquet, Aladin Virmaux | Reviewers: Simon
Report Upstream: N/A | King
Branch: | Work issues:
Dependencies: #12412, #12413, #14806 | Commit:
| Stopgaps:
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Changes (by SimonKing):
* dependencies: #12412, #12413 => #12412, #12413, #14806
Comment:
I found that #14806 has introduced a new argument data_structure to
`DiGraph`, and the arguments that I pass to `DiGraph.__init__` are
mistakenly interpreted as "data_structure".
And now I wonder how to cope with it. We have---again by #14806---
immutable digraphs, and the main purpose of "sage.quivers.quiver.Quiver"
was to create immutable digraphs. So, perhaps it would be a good idea to
refactor the code again, namely: Remove sage.quivers.quiver, and move its
functionality to plain digraphs. Since constructions such as
`FreeSmallCategory` use the digraph as cache key, it would only work with
immutable digraphs (which is what we want!).
--
Ticket URL: <http://trac.sagemath.org/ticket/12630#comment:125>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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