About: http://webisa.webdatacommons.org/220289166

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	How can I show that if the second fundamental form of a surface is identically equal to zero, then the surface is a plane?
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com