Block, SkipCaptcha, apieditor, Automoderated users, Bots, edit, ratelimit-exempt
58,183
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − +
→top: Spelling, Grammar, and General Cleanup
[[File:Empty set symbol.png|thumbnail|170px|right|[[Empty set]] symbol]]
[[File:Empty set symbol.png|thumbnail|170px|right|'''Empty set''' symbol]]
In [[set theory]], the '''empty set''', usually denoted <math>\emptyset</math>, is the set without any members. For example, the "set of all blue-eyed lions," the "set of all mermaids," and the "set of all people born in 1700 who are still alive" are all empty sets.
In [[set theory]], the '''empty set''', usually denoted <math>\emptyset</math>, is the set without any members. For example, the "set of all blue-eyed lions," the "set of all mermaids," and the "set of all people born in 1700 who are still alive" are all empty sets.