About: http://webisa.webdatacommons.org/342781634

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	If $A^TA=I$ and $A$ is a square matrix, i.e. has equally many rows and columns, then $A$ is an orthogonal matrix.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com