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Definition: Disjoint Sets

Two sets are called disjoint if their intersection is empty. The Venn diagram below illustrates two disjoint sets $A$ and $B:$


  1. The set of all mammals and the set of all reptiles are disjoint.
  2. The set of all stars and the set of all planets are not disjoint.

| | | | | Contributors: bookofproofs | References: [979], [7838]

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Bibliography (further reading)

[7838] Kohar, Richard: “Basic Discrete Mathematics, Logic, Set Theory & Probability”, World Scientific, 2016

[979] Reinhardt F., Soeder H.: “dtv-Atlas zur Mathematik”, Deutsche Taschenbuch Verlag, 1994, 10

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