About: http://webisa.webdatacommons.org/22413287

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	This is the complement of a small tetrahedron in a larger tetrahedron , whose vertices are indicated on the figure: here K is a constant, defined in Theorem (23).
http://www.w3.org/ns/prov#wasQuotedFrom	mdpi.com