# Contain (Set)

Pronunciation: /kənˈteɪn/ Explain

A set contains another set if all the members of the contained set are also members of the containing set.[2] If set A contains set B we can also say the set B is a subset of set A, and write BA.

#### Example 1

 Figure 1: Set A contains set B.

#### Example 2

The set of real numbers contains the set of integers because every integer is also a real number.

### References

1. McAdams, David E.. All Math Words Dictionary, contain. 2nd Classroom edition 20150108-4799968. pg 44. Life is a Story Problem LLC. January 8, 2015. Buy the book
2. contain. merriam-webster.com. Encyclopedia Britannica. Merriam-Webster. Last Accessed 6/25/2018. http://www.merriam-webster.com/dictionary/contain. Buy the book
3. Gilbert, Jimmie; and Gilbert Linda. Elements of Modern Algebra. 6th edition. pp 1-3. Thomson, Brooks/Cole. 2005. Last Accessed 6/25/2018. Buy the book
4. Potter, Michael. Set Theory and Its Philosophy: A Critical Introduction. pg 31. Oxford University Press, USA. March 11, 2004. Last Accessed 6/25/2018. Buy the book

McAdams, David E. Contain (Set). 4/16/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/c/contain_set.html.

### Revision History

4/16/2019: Updated equations and expressions to new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)