A concept relationship style derived from the branch of mathematics known as set theory.
Sources:
NIST IR 8477
An OLIR that characterizes each relationship between pairs of elements by qualifying the rationale for indicating the connection between the elements and classifying the relationship based on set theory principles.
Sources:
NIST IR 8278Ar1
under Set Theory Relationship Mapping OLIR
NIST IR 8278r1
under Set Theory Relationship Mapping OLIR