Concept

Empty Set

An empty set is a set with no elements. It is written with empty curly brackets as or with the symbol In a Venn Diagram, the empty set can be shown by not writing any elements in it.
A universal set containing integers between -9 and 9 (excluding 0), along with an empty set A.

The empty set can also be described in different ways, such as by verbal description, roster notation, and set-builder notation.

Verbal Description All negative integers greater than
Roster Notation or
Set-Builder Notation

It is worth noting that since there are no negative integers greater than zero, this description corresponds to the empty set.

Exercises