bivalence
True or false
Bivalence is the principle that every statement must be either true or false, with no third option.
The term appears primarily in logic and philosophy, where the law of bivalence underlies classical reasoning.
Some logical systems reject bivalence, allowing for statements that are neither true nor false—such as predictions about future events or paradoxes like "this sentence is false."
Proposition's logical standing
- propositionStatement expressing a judgment
- binaryConsisting of two parts
- true-falseExam with binary responses
- tautologyRedundant or circular statement
contradiction · validity · predicate · theorem · deduction · inference · axiom · negation
Division into contrasting parts
- binaryConsisting of two parts
- polarityState of opposing forces
- twofoldConsisting of two parts
- oppositesTerms with contrary meanings
either-or · dualism · antithesis · complementarity · black-and-white · all-or-nothing · on-off · yes-no
Lack of fixed outcome
- vaguenessAbsence of precision
- uncertaintyState of being unsure
- gradationIncremental transition between stages
- spectrumContinuous range of values
truth-value
Proposition's logical standing
- propositionStatement expressing a judgment
- binaryConsisting of two parts
- true-falseExam with binary responses
tautology · contradiction · validity · predicate · theorem · deduction · inference · axiom · negation · disjunction
dichotomy
Division into contrasting parts
opposites · either-or · dualism · antithesis · complementarity · black-and-white · all-or-nothing · on-off · yes-no · dyad
indeterminacy
Lack of fixed outcome
- vaguenessAbsence of precision
- uncertaintyState of being unsure
- gradationIncremental transition between stages
ambivalence, ambivalent, bivalent, ambivalences, ambivalently, bivalency