|Equivalence: Relation between sentences. It exists if both sides have the same truth value, so that they are both true or both false._____________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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|Horwich I 161
Material equivalent/T-schema/Thomson: "material equivalent" is itself defined in terms of truth.
Equivalence/equivalent/Thomson: E.g. twice the same expression, whereby once its definition was used instead of a part of it - that is not the form of instances of Tarski's truth definition.
_____________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.
P. Horwich (Ed.)
Theories of Truth Aldershot 1994