Set Notation
We start with the most basic set notation - the symbol showing membership. The individual objects in a set are called the members or elements of the set . We relate a member and a set using the symbol ∈. If an object x is an element of set A, we write x ∈ A. If an object z is not an element of set A, we write z ∉ A. ∈ denotes “is an element of’ or “is a member of” or “belongs to” ∉ denotes “is not an element of” or “is not a member of” or “does not belong to” Example:
Other notations shall be introduced along with the corresponding concepts in this series of lessons.
The following video describes: Set Notations, Empty Set, Symbols for ‘is an element of’, subset, intersection and union.
Custom Search
We welcome your feedback, comments and questions about this site - please submit your feedback via our Feedback page. © Copyright 2005, 2008 - onlinemathlearning.com Embedded content, if any, are copyrights of their respective owners.
|