Philosophy Lexicon of Arguments

Equivalence: Relation between sentences. It exists if both sides have the same truth value, so that they are both true or both false.
Author Item Excerpt Meta data
Prior, Arthur
Books on Amazon
Equivalence I 93
material equivalence / Prior: must not be equated with identity - all true propositions are material equivalent, but ((s) they do not say the same thing) - Prior: Paradox of the truth-teller: "I think something true" requires a second truth beside this thought -

Pri I
A. Prior
Objects of thought Oxford 1971

Pri II
Arthur N. Prior
Papers on Time and Tense 2nd Edition Oxford 2003

> Counter arguments against Prior
> Counter arguments in relation to Equivalence

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Ed. Martin Schulz, access date 2017-04-23