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Empty set

From Encyclopedia of Mathematics
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The set which contains no elements. Notation: , . In other words, . Moreover, any assertion that is always false could be used in this definition instead of . The empty set is a subset of any set.

How to Cite This Entry:
Empty set. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Empty_set&oldid=31429
This article was adapted from an original article by M.I. Voitsekhovskii (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article