Philosophy Lexicon of Arguments

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Bivalence: the division in the evaluation of statements on two possible values. These can be interpreted as "true" and "false", but also can be interpreted differently. In multivalued logic there are three to infinitely many values. See also probabilities.
 
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Berka I 31f
Bivalence/Logical Form/Peirce: the fact that the sentence X is either true or false is written as: (x - f)(w - x) = 0 - Execution/(s): a) x = w : (1 - 0)(1 - 1) = 0 - b) x = f: (0 - 0)(0 - 0) = 0.
I 32
Therefore, (x - f)(w - y) = 0 means that either x is false or y is true. - That is the same as "if x is true, y is true" - ((s) This corresponds to equivalence: Always the same truth value because of 1) presumed bivalence - 2) exclusionary or) - ((s) Bivalence/(s) couples x and y together, without any contentual determination, simply because merely one other truth value remains, which is thus determined.) - (>equivalence).

Peir I
Ch. S. Peirce
Philosophical Writings 2011

Brk I
K. Berka/L. Kreiser
Logik Texte Berlin 1983


> Counter arguments against Peirce
> Counter arguments in relation to Bivalence



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Ed. Martin Schulz, access date 2017-05-29