#16604: new OA for n=112,160,176,208,224,352,416,514,544,640,796,896
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Reporter: ncohen | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: combinatorial | Resolution:
designs | Merged in:
Keywords: | Reviewers:
Authors: Nathann Cohen | Work issues:
Report Upstream: N/A | Commit:
Branch: u/ncohen/16604 | e5f428d75ade25f0524abbb61c71a67039ed754a
Dependencies: #16582 | Stopgaps:
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Comment (by vdelecroix):
Replying to [comment:27 ncohen]:
> Yo !
>
> > I would be really happy if:
> > - the helper function would return a quasi-difference matrix instead
> > - it was a function (not a hidden one) with explanations. I was able
to simplify the function reading line by line but I do not understand
anything. Do you have at least references for the construction?
>
> I made it a private function exactly because I have no idea how to write
a proper documentation for it. It is just a kind of construction that
Julian R. Abel uses for many OA, and as I found I had been doing
copy/pastes for it many many times I figured out that it would be better
to simplify the code by making it one function. What it does exactly was
not more documented before than it is now.
>
> You can find examples of this construction in the Handbook, like on page
171 about theorem 3.76 for n=80.
It is not an explanation... I would like something like "If A and Y are
matrices of size XX and properties YY then applying construction ZZ you
obtain a quasi-difference matrix".
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Ticket URL: <http://trac.sagemath.org/ticket/16604#comment:29>
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