About: http://webisa.webdatacommons.org/291034815

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	On the other hand, the sum S of the y-th powers of the sine waves of the three phases is: ##EQU2## When y is an even number, S becomes constant, independent of the value of ??.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com