The symbol used to denote the negation operation ("NOT") in symbolic logic, also called "logical not."

# Negation Sign

## See also

NOT## Explore with Wolfram|Alpha

## References

Bringhurst, R.*The Elements of Typographic Style, 2nd ed.*Point Roberts, WA: Hartley and Marks, p. 281, 1997.

## Referenced on Wolfram|Alpha

Negation Sign## Cite this as:

Weisstein, Eric W. "Negation Sign." From
*MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/NegationSign.html