Empty set
From Encyclopedia of Mathematics
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
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