Philosophy Lexicon of Arguments

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Equivalence: Relation between sentences. It exists if both sides have the same truth value, so that they are both true or both false.

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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
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Books on Amazon
EMD II 371
Logically equivalent/Kripke: are the results even if it makes a difference in what order multiple descriptions are eliminated - Russell: not equivalent: (Ey)((x)(y = x ↔ f(x)) u Cc(y)) and C((Ey)(x)(y = x ↔ f(x)) u c(y))) - (C= "believe")).
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II 379
Logically equivalent are the following: E.g. P u P and P v P and (E.g.)(Ey) (Fx u Fy) and (Ex)(Ey) (Fx v Fy), although conjunction and disjunction are not equivalent.
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EMD II 379
Logically equivalent/Kripke: P u P and P v P and (Ex)(Ey) (Fx u Fy) and (Ex)(Ey) (Fx v Fy) although conjunction and disjunction are not equivalent.


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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution.

K I
S.A. Kripke
Name und Notwendigkeit Frankfurt 1981

K III
S. A. Kripke
Outline of a Theory of Truth (1975)
In
Recent Essays on Truth and the Liar Paradox, R. L. Martin (Hg), Oxford/NY 1984

EMD II
G. Evans/J. McDowell
Truth and Meaning Oxford 1977

Ev I
G. Evans
The Varieties of Reference (Clarendon Paperbacks) Oxford 1989


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Ed. Martin Schulz, access date 2017-11-19