Set union
= Set union
{title2=$\bigcup$}
= Union
{synonym}
The union $\bigcup_{i\in I}A_i$ contains exactly the elements that belong to at least one set $A_i$.
= Set union
{title2=$\bigcup$}
= Union
{synonym}
The union $\bigcup_{i\in I}A_i$ contains exactly the elements that belong to at least one set $A_i$.