#19221: Some new (n,2^k,1)-BIBD
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Reporter: ncohen | Owner:
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-6.9
Component: combinatorial | Resolution:
designs | Merged in:
Keywords: | Reviewers: Vincent Delecroix
Authors: Nathann Cohen | Work issues:
Report Upstream: N/A | Commit:
Branch: u/ncohen/19221 | 0643aea106482ec5ceabec1c6e2daa7134d18b14
Dependencies: | Stopgaps:
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Comment (by dimpase):
Replying to [comment:3 vdelecroix]:
> In `OA_and_oval` I proposed a standard method to build oval and
hyperoval and you complained about coordinates
([http://trac.sagemath.org/ticket/16552#comment:4 here]). Now you are
doing the very same for hyperovals thing but specialized in a function...
not mentioning the fact that #16552 is stuck.
>
> Moreover, why do you need GAP to build a hyperoval? These are rather
trivial to construct (look at Colbourn-Dinitz, p. 709).
Denniston's construction needs an irreducible binary quadratic form GF(q),
for q power of 2. It is not 100% trivial, IMHO (well, I am not a num, and
GAP knows how to do it, that's why.
--
Ticket URL: <http://trac.sagemath.org/ticket/19221#comment:6>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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