Union (set theory)
Set of elements in any of some sets
Union (set theory)
In set theory, the union (denoted by ∪) of a collection of sets is the set of all elements in the collection. It is one of the fundamental operations through which sets can be combined and related to each other. A nullary union refers to a union of zero ( 0 {\displaystyle 0} ) sets and it is by definition equal to the empty set. For explanation of the symbols used in this article, refer to the table of mathematical symbols.
Read on Wikipedia · Image Public domain
Open boosters, collect cards and trade them. Free to play.
Play for free