¬

See also:

¬ U+00AC, ¬
NOT SIGN
«
[U+00AB]
Latin-1 Supplement
[U+00AD]
U+FFE2, ¬
FULLWIDTH NOT SIGN

[U+FFE1]
Halfwidth and Fullwidth Forms
[U+FFE3]

Translingual

Etymology

Introduced by Arend Heyting in “Die formalen Regeln der intuitionistischen Logik” (1930)[1]

Symbol

¬

  1. (logic) not
    (x ≠ y) ↔ ¬(x = y)

Usage notes

Synonyms

References

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