Formal Statement
In the formal language of the Zermelo–Fraenkel axioms, the axiom reads:
or in words:
- Given any set A and any set B, there is a set C such that, given any set D, D is a member of C if and only if D is equal to A or D is equal to B.
or in simpler words:
- Given two sets, there is a set whose members are exactly the two given sets.
Read more about this topic: Axiom Of Pairing
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