#19418: skew-Hadamard matrices and related srg's
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Reporter: | Owner:
dimpase | Status: needs_review
Type: | Milestone: sage-6.10
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers: Nathann Cohen
combinatorics | Work issues:
Keywords: | Commit:
Authors: Dima | c04916b8e3924ff6da6066185cee62148ecf20c8
Pasechnik | Stopgaps:
Report Upstream: N/A |
Branch: |
public/19418 |
Dependencies: |
#19309 |
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Changes (by {'newvalue': u'Dima Pasechnik', 'oldvalue': ''}):
* status: needs_work => needs_review
* author: => Dima Pasechnik
Comment:
looks like I have addressed all the points raised; (I didn't mention in
commit messages that the code now does checking of skew-Hadamardness
inplace).
ready for another round, hopefully...
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=135c0ea946a630afcba946056ef691c50b315d24
135c0ea]||{{{for a skew Hadamard matrix, check that the diagonal entries
are all 1}}}||
||[http://git.sagemath.org/sage.git/commit/?id=c04916b8e3924ff6da6066185cee62148ecf20c8
c04916b]||{{{return skew-normalized Hadamard mats by default}}}||
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Ticket URL: <http://trac.sagemath.org/ticket/19418#comment:27>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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