# Revision history of "Axiom of extensionality"

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**How to Cite This Entry:**

Axiom of extensionality.

*Encyclopedia of Mathematics.*URL: http://encyclopediaofmath.org/index.php?title=Axiom_of_extensionality&oldid=31424

This article was adapted from an original article by V.N. Grishin (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article