About: http://webisa.webdatacommons.org/404128318

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	Widman used Cossist notation, as was usual at that time, discussing 24 different types of equations.
http://www.w3.org/ns/prov#wasQuotedFrom	st-and.ac.uk