About: http://webisa.webdatacommons.org/220499445

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	So a short answer: Now here is a thing, from simple algebra we can show that: (a + ib) * (c + id) = (ac - bd) + i(ad + bc)
http://www.w3.org/ns/prov#wasQuotedFrom	parallax.com