Intersection
The elements common to all the argument collections.
Wikipedia
Intersection (set theory)MathWorldIntersectionWikidataQ185837FungrimIntersectionWolfram LanguageIntersection!Intersection(a, b, …)the elements common to every collection, as a Details
- Idempotent:
. - Disjoint collections intersect to the symbol
, not an empty . - With three or more collections, only elements present in all of them survive.
- Same counting identity as Union, rearranged:
.