About: http://webisa.webdatacommons.org/89875141

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	D N = [ 4 D N / 2 4 D N / 2 + 2 U N / 2 4 D N / 2 + 3 U N / 2 4 D N / 2 + U N / 2 ] where N is the power of 2, and UN is an N???N matrix, each element of which is 1.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es