#13961: Compute the root graph of a graph (inverse of Graph.line_graph)
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Reporter: ncohen | Owner: jason, ncohen, rlm
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.7
Component: graph theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Nathann Cohen | Merged in:
Dependencies: #13787 | Stopgaps:
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Description changed by ncohen:
Old description:
> I've been willing to write this for aaaaaaaaaaaaaages !!!
>
> Three patches :
> * one creates a new module with a lot of doc, and a `root_graph`
> function.
> * another one moves `is_line_graph` and `line_graph` to this new module,
> and imports them into `generic_graph` and `graph`
> * another one modifies `is_line_graph` so that it can also return root
> graphs.
>
> YeahhhhhhhhhhhhhhhhhhhhhHHH !!
>
> Nathann
New description:
I've been willing to write this for aaaaaaaaaaaaaages !!!
Three patches :
* one creates a new module with a lot of doc, and a `root_graph` function.
* another one moves `is_line_graph` and `line_graph` to this new module,
and imports them into `generic_graph` and `graph`
* another one modifies `is_line_graph` so that it can also return root
graphs.
YeahhhhhhhhhhhhhhhhhhhhhHHH !!
Nathann
Apply:
* [attachment:trac_13961-new_module.patch]
* [attachment:trac_13961-move_stuff_around.patch]
* [attachment:trac_13961-update_is_line_graph.patch]
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13961#comment:4>
Sage <http://www.sagemath.org>
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