#15948: marked Dynkin diagrams
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Reporter: vittucek | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Vít Tuček, Travis | Reviewers: Travis Scrimshaw, Vít
Scrimshaw | Tuček
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/combinat/root_systems/marked_types-15948|
da0fc02f12f34ffd77a9de71df136e2855229e10
Dependencies: | Stopgaps:
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Old description:
> This patch adds set_crossed_nodes and set_node_labels methods to (non-
> affine) Dynkin Diagrams and modifies the _latex_dynkin_diagram (currently
> without docstrings) so the data are actually used by latex.
>
> This convenient notation is used quite often in certain subbranch of
> differential geometry, see e.g. http://arxiv.org/abs/1303.1307
>
> Moreover, there are two small bugfixes:
>
> 1. Documentation is wrong about our convention for arrows in Dynkin
> diagrams.
> 1. Dynkin diagrams for D and E series contain a special character in the
> node name of tikzpicture which TeX doesn't like.
New description:
This patch adds marked Dynkin diagrams and marked Cartan types. See
http://trac.sagemath.org/ticket/15948#comment:18 for details.
This convenient notation is used quite often in a certain subbranch of
differential geometry, see e.g. http://arxiv.org/abs/1303.1307, and in Lie
superalgebras, where markings denote the parity of indices.
Moreover, there are two small bugfixes:
1. Documentation is misleading about our convention for arrows in Dynkin
diagrams. We do follow Bourbaki convention for graphics (which is
apparently the same as in Kac), but not the convention for the underlying
Cartan matrix.
1. Dynkin diagrams for D and E series contain a special character in the
node name of tikzpicture which TeX doesn't like.
--
Comment (by vittucek):
Great. Then I think that we can give this patch a positive review. I'm not
sure what's the proper protocol here, so I'll leave that up to you. I've
took the liberty and changed the name of the patch and its description.
--
Ticket URL: <http://trac.sagemath.org/ticket/15948#comment:31>
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