Editing Hadamard matrix (section)

==External links==
*[http://rangevoting.org/SkewHad.html Skew Hadamard matrices] of all orders up to 100, including every type with order up to 28;
* {{cite web | url = http://oeis.org/search?q=Hadamard+Matrix | title=Hadamard Matrix}} in [[OEIS]]
* {{cite web | author=N. J. A. Sloane
|url=http://neilsloane.com/hadamard
|title=Library of Hadamard Matrices|author-link=N. J. A. Sloane
}}
*[https://drs.icar.gov.in/WebHadamard/WebHadamard.htm On-line utility] to obtain all orders up to 1000, except 668, 716, 876 & 892.
*[https://cran.r-project.org/package=HadamardR R-Package] to generate Hadamard Matrices using [[R (programming language)|R]] 
* [https://web.archive.org/web/20140714222854/http://blogs.jpl.nasa.gov/2013/08/slice-of-history-hadamard-matrix/ JPL: In 1961, mathematicians from NASA’s Jet Propulsion Laboratory and Caltech worked together to construct a Hadamard Matrix containing 92 rows and columns]

{{Matrix classes}}

[[Category:Combinatorial design]]
[[Category:Matrices (mathematics)]]
[[Category:Unsolved problems in mathematics]]