#18624: Implement the lift theorem for linear matroids
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Reporter: Rudi | Owner: Rudi
Type: enhancement | Status: positive_review
Priority: major | Milestone: sage-6.8
Component: matroid theory | Resolution:
Keywords: | Merged in:
Authors: Rudi Pendavingh | Reviewers: Michael Welsh
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/Rudi/implement_the_lift_theorem_for_linear_matroids|
7f020ea4e4d906bc77b1885179b53a1090f4798e
Dependencies: | Stopgaps:
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Comment (by Rudi):
Replying to [comment:50 yomcat]:
> Now it's working as far as I can tell.
>
> Is there anything else planned on partial fields and stuff? I should be
turning my thesis into paper(s) soonish, and I'd hate to have to rewrite
all my code because you made a new function.
Well, here's a few things I might do:
- add a few maps to lift_map;
- make lift_cross_ratios design it's own lift map / target ring based on
the cross ratios of the given matrix;
- speed up lift_cross_ratios, _local_binary_matroid,
_local_ternary_matroid;
- kill #15296
But they are not on the top of my list, so can't say when. The first one
is quite easy, so I might work on that between harder tasks.
I doubt if that will make any of your code outdated. Making real gm-
matrices from your gf19-matrices (and latex-ing them) just became easier,
so that can never hurt.
What kind of functionality were you thinking of?
--
Ticket URL: <http://trac.sagemath.org/ticket/18624#comment:51>
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