Union and Intersection
If A and B are disjoint sets, then
From this, one can show that in general the cardinalities of unions and intersections are related by
Read more about this topic: Cardinality
Famous quotes containing the words union and, union and/or intersection:
“She had brought love to the union and he had brought a longing after the flesh.”
—Zora Neale Hurston (1891–1960)
“Visitors who come from the Soviet Union and tell you how marvellous it is to be able to look at public buildings without advertisements stuck all over them are just telling you that they can’t decipher the cyrillic alphabet.”
—Clive James (b. 1939)
“If we are a metaphor of the universe, the human couple is the metaphor par excellence, the point of intersection of all forces and the seed of all forms. The couple is time recaptured, the return to the time before time.”
—Octavio Paz (b. 1914)