Economics Dictionary of Arguments

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Identity: Two objects are never identical. Identity is a single object, to which may be referred to with two different terms. The fact that two descriptions mean a single object may be discovered only in the course of an investigation.
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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 Concept Summary/Quotes Sources

Benson Mates on Identity - Dictionary of Arguments

I 193
Identity/"is"/analytical/intensional/Mates: it is debatable whether "A is A" must be regarded as formal analytically or analytically because of the sense of "is". - Like statements from scheme. Example: If A is warmer than B and B is warmer than C, then A is warmer than C analytically because of the sense of "is warmer than".
>Analyticity/Synthetic
, >Analytically true, >Synthetic.
he dispute is whether "is" can be regarded as a logical constant such as "not" etc, or as a belonging to the non-logical vocabulary.
>Is, >Logical constants, >Connectives, cf. >Lexicon/Quine, >Copula.
Language L: here was "is" non-logic - that was arbitrary.
>Everyday language.
I 19
if not -logic, then independent theory of identity possible.
>Identity.
On the other hand: if "is" logical constant (which means the relation of identity above this area) we construct with that a new language.
I 200
Identity/Frege/Mates: "a = a" and "a = b": Difference sense/meaning- E.g. "7 + 5 = 12" does not mean the same as "The expressions" 7 + 5 "and" 12 " refer to the same object ".
>Metalanguage, >Object language, >Reference, >Levels/order, >Levels of Description.
Solution/Frege: the second is a synthetic truth about language ((s) metalinguistically) - the first an analytic truth about numbers - ((s) object language) - identity/Mates: there is not the relation of identity! - They are different from area to area - ((s) intensional/extensional).
>Domains.

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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. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Mate I
B. Mates
Elementare Logik Göttingen 1969

Mate II
B. Mates
Skeptical Essays Chicago 1981


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