#12630: Add representations of quivers and quiver algebras to sage
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Reporter: JStarx | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: algebra | Resolution:
Keywords: algebra, quiver, | Merged in:
module, days49 | Reviewers: Simon King, Travis
Authors: Jim Stark, Simon | Scrimshaw
King, Mathieu Guay-Paquet, Aladin | Work issues:
Virmaux | Commit:
Report Upstream: N/A | b628ce36bc8f5f67a8eae6db125064a85cd85229
Branch: | Stopgaps:
public/combinat/quivers |
Dependencies: #12412, #12413, |
#14806, #15491, #15623, #15810 |
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Changes (by tscrim):
* reviewer: Simon King => Simon King, Travis Scrimshaw
Comment:
I've made my pass through it. The first half of the commits are adding the
files to the doc and doing doc formatting (and 80 width lines). I've made
three changes:
1. There was a bug in the `all_paths()` method would consider a single
edge from `1 -> 2` with label `'abc'` as 3 edges. Fixed.
2. For a path algebra `A`, the `A[1]` worked. So `list(A)` would not error
out (in fact, it would run for forever). I added an `__iter__()` so that
it would iterate over the non-zero graded components.
3. I made alias for `S` as `simple` for a more natural name. Similarly
`injective` and `projective` for `I` and `P` respectively.
If you're happy with my changes, then I believe we can set this to a
positive review.
--
Ticket URL: <http://trac.sagemath.org/ticket/12630#comment:255>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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