truthfunction
nounUK /ˈtruːθˌfʌŋkʃən/
US /ˈtruːθˌfʌŋkʃən/
A truth function is a rule that gives a true or false answer based on whether its inputs are true or false.
In logic class, we learned that negation is a simple truth function that flips true to false.
RELATED WORDS
OTHER MEANINGS
2. In computing, a function that returns only true or false.
The program uses a truth function to check if the password is correct.
3. A mathematical mapping from truth values to truth values.
The truth function AND outputs true only when both inputs are true.
4. A statement whose truth depends entirely on the truth of its parts.
Philosophers debated whether every sentence is a truth function of simpler claims.