#14532: Symplectic graphs
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Reporter: ncohen | Owner: jason, ncohen, rlm
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.10
Component: graph theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Nathann Cohen | Merged in:
Dependencies: | Stopgaps:
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Comment (by ncohen):
Helloooooooooooooo !!
> Sry for comming back at you so late. I had some other stuff lately!
Come on, I am already very thankful that you take the time to review these
patches !!!
> 1. Maybe we should check if d is even and also nonzero (perhaps >= 2)
since that is also a invalid parameter.
Done
> 2. I would change the line
> {{{
> Graph([map(tuple,PV), lambda x,y:V(x)*(M*V(y)) == 0], loops = False)
> }}} to
>
> {{{
> {{{
> Graph((map(tuple,PV), lambda x,y:V(x)*(M*V(y)) == 0), loops = False)
> }}}
> }}}
>
> which should be 2x faster.
`O_o`
Here is what I get when I change it :
{{{
sage: graphs.SymplecticGraph(4,4)
...
NetworkXError: Input is not a known data type for conversion.
}}}
But what do you think it should do, and why do you think that it should be
2x faster ? `O_o`
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14532#comment:3>
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