Disjoint Sets

Pronunciation: /dɪsˈdʒɔɪnt/ Explain

Two sets are disjoint if they have no members in common.[1] This is stated mathematically as A ∩ B = ∅ (the intersection of A and B is empty).

Two disjoint sets having no members in common.
Figure 1: Disjoint Sets


  1. disjoint. merriam-webster.com. Encyclopedia Britannica. Merriam-Webster. Last Accessed 8/6/2018. http://www.merriam-webster.com/dictionary/disjoint.
  2. Gilbert, Jimmie; and Gilbert Linda. Elements of Modern Algebra. 6th edition. pg 4. Thomson, Brooks/Cole. 2005. Buy the book
  3. Seymour Lipschutz. Schaum's Outline of Set Theory and Related Topics. 2nd edition. pg 4. McGraw-Hill. July 1, 1998. Buy the book
  4. Paul R. Halmos. Naive Set Theory. 1st edition. pg 4. Springer. January 16, 1998. Buy the book

Cite this article as:

McAdams, David E. Disjoint Sets. 7/5/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/d/disjoint.html.

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Revision History

7/4/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
3/28/2008: Initial version. (McAdams, David E.)

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