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.
 
Author Item Excerpt Meta data

 
Books on Amazon:
Bertrand Russell
I 35
Def formally equivalent/Principia Mathematica/Russell: saying that j x and y x are formally equivalent is the same as to say: j x^ und y x^ have the same extension.
I 43
Equivalence: in classes: Identity notation:
" x e a ≡x x e b " - implication: in classes inclusion (proper subset).

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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.

R I
B. Russell/A.N. Whitehead
Principia Mathematica Frankfurt 1986

R II
B. Russell
Das ABC der Relativitätstheorie Frankfurt 1989

R IV
B. Russell
Probleme der Philosophie Frankfurt 1967

R VI
B. Russell
Die Philosophie des logischen Atomismus
In
Eigennamen, U. Wolf (Hg), Frankfurt 1993

R VII
B. Russell
Wahrheit und Falschheit
In
Wahrheitstheorien, G. Skirbekk (Hg), Frankfurt 1996


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Ed. Martin Schulz, access date 2017-06-23