Many-valued logic
Many-valued logic, Formal system in which the well-formed formulae are interpreted as being able to take on values other than the two classical values of truth or falsity. The number of values possible for well-formed formulae in systems of many-valued logic ranges from three to uncountably many.
The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Brian Duignan.
Citation Information
Article Title:
Many-valued logic
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
01 November 2026
Access Date:
November 14, 2026