## Philosophy Lexicon of Arguments | |||

Author | Item | Excerpt | Meta data |
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Prior, Arthur Books on Amazon |
Identity | I 63 Identity of classes: symbolic: PxEfxyx - Identity/Relation-in-Extension: PxPyEfxyyxy - Identity/thre-place predikates: PxPyPzEfxyzyxyz - so you can go on and on up - or down to zero-place predicates(propositions). I 62ff Identity / Prior: a "zero-place predicate": (0) Efy i.e. "If f then y and if y then f" (spelling Lesniewski: E = equivalent) - which is the case when f and y are the case, or not case when f and y are not. Truth value / Prior: so we imagine the term "truth value" for what we describe as the same, if the condition (0) is satisfied. |
Pri I A. Prior Objects of thought Oxford 1971 Pri II Arthur N. Prior Papers on Time and Tense 2nd Edition Oxford 2003 |

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Ed. Martin Schulz, access date 2017-03-27