Symbols:Set Theory/Empty Set
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Empty Set
- $\O$
The empty set:
- $\O = \set {}$
The $\LaTeX$ code for \(\O\) is \O or \varnothing or \empty.
Deprecated
An alternative but less attractive symbol for the empty set is $\emptyset$.
This symbol is deprecated on $\mathsf{Pr} \infty \mathsf{fWiki}$.
The $\LaTeX$ code for \(\emptyset\) is \emptyset .
Sources
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Appendix: Table $7$: Common signs and symbols: empty set
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Appendix $14$: Symbols