#12630: Add representations of quivers and quiver algebras to sage
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Reporter: JStarx |
Owner: AlexGhitza
Type: enhancement |
Status: needs_work
Priority: major |
Milestone: sage-5.11
Component: algebra |
Resolution:
Keywords: algebra, quiver, module, days49 |
Work issues: Use existing infrastructure for Homspase and Morphism.
Report Upstream: N/A |
Reviewers:
Authors: Jim Stark, Simon King, Mathieu Guay-Paquet, Aladin Virmaux |
Merged in:
Dependencies: #12412, #12413 |
Stopgaps:
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Comment (by virmaux):
The constructor of a quiver construct a Digraph with all the arguments set
to None by default. Unfortunately, it seems that boundary cannot be None.
If we change the __init__ with boundary=(), the plot function works.
We don't know exactly if this is really portable or not.
Also, note from Mathieu: DiGraph documentation disagrees with Graph
documentation about _boundary=None accepted or not. Also, certainly
DiGraphs constructor should not use a mutable list as a default argument.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12630#comment:83>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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