#16552: oval in finite projective plane
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-6.3
Component: combinatorial | Resolution:
designs | Merged in:
Keywords: | Reviewers:
Authors: Vincent Delecroix | Work issues:
Report Upstream: N/A | Commit:
Branch: | f7989eb77ceb0f23b07568e8433d7a27b74861de
u/vdelecroix/16552 | Stopgaps:
Dependencies: #16500 |
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Changes (by ncohen):
* status: needs_review => needs_info
Comment:
> and hyperovals are here too for `GF(2^k)` ;-)
Ahem. Vincent, I thank you for the feature but the code really needs some
reorganization `:-P`
First, why wouldn't the system of coordinates be provided by
`DesarguesianProjectivePlane` when you create one ? Clearly getting the
"coordinates" of the points can be useful, and the only reason why it is
not already the case is that `BlockDesign` only supports integers as a
ground set. But you could return the dictionary along with the projective
plane, couldn't you ?
additional question : is the `_desarguesian_projective_plane_coordinates`
properly defined anyway ? Or is that why it is just an internal function ?
Similarly, the oval functions have no reason to return integers. They can
just return the triples of coordinates.
Besides, we can't just dump "Oval functions" like that in
`block_designs.py`. And... Well, though you were not the worst in the
crowd, I think I can easily gather 50+ emails that were exchanged just
because I created a `ProjectivePlane` function which returned a
desarguesian projective plane. How can you now create a function as well
defined as `OvalInDesarguesianProjectivePlaneDesign` ?.. `:-P`
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/16552#comment:4>
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