¬
|
|
Translingual
Etymology
Introduced by Arend Heyting in “Die formalen Regeln der intuitionistischen Logik” (1930)[1]
Symbol
¬
- (logic) not
- (x ≠ y) ↔ ¬(x = y)
Usage notes
- When used in a symbolic logic context, this symbol can be called tilde.
Synonyms
- ~, !
References
- http://jeff560.tripod.com/set.html