About: http://webisa.webdatacommons.org/280444468

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	Descartes' method also starts off with an observation which we now easily see is true in Z[???b], namely a + ???b has a cube root only if a2 - b is a cube.
http://www.w3.org/ns/prov#wasQuotedFrom	st-andrews.ac.uk