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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 .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#ebf4ff}@media screen{html.skin-theme-clientpref-night .mw-parser-output…

History, History and etymology & Arbitrary union

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Overview

Union of two sets

Notation

Arbitrary union

Algebraic properties

History and etymology

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Union (set theory)

Nodes48
Edges47
Triples0
Avg. degree1.96
Density0.041667
Components1

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Important terminology

union sets set displaystyle cup one elements intersection bigcup two axiom collection example cap theory finite notation arbitrary also textstyle

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