About: http://webisa.webdatacommons.org/209339534

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	By the above, here is a neat criterion for checking whether $\|\cdot\|_O$ is an operator norm:
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com