Three-Valued Logic

A logical structure which does not assume the law of the excluded middle. Three truth values are possible: true, false, or undecided. There are 3072 such logics.

See also

Fuzzy Logic, Law of the Excluded Middle, Logic

Explore with Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Three-Valued Logic." From MathWorld--A Wolfram Web Resource.

Subject classifications