Philosophy Lexicon of Arguments | |||
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| Variables, philosophy: variables are symbols in statements or logical formulas, in the place of which various, more precise determinations, such as constants or names of objects, can be inserted. In logic, free and bound variables are distinguished. Free variables, which are not bound by a quantifier such as (Ex) or (x), do not form a statement yet but a statement function such as e.g. "Fx" - "Something is F". Numbers or objects are not variable entities. The variability consists in the applicability of more than one possible value. See also free variables, bound variables, constants, individual constants, individual variables, substitution, substitutability, logic, statements, statement function, formulas._____________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 |
Horwich I 145 Variable / constant / quotes / generalization / Black: a natural way, the condition would be to generalize: for all x, if x is a sentence, then "x" is true iff. equi x - Vs: this is nonsense, because: the symbol immediately following "then" (namely, "x") refers to a constant and not to a variable - "x" is the 24th letter - which is just as absurd as to say "Tom" is true._____________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. |
Bla I Max Black Bedeutung und Intention In Handlung, Kommunikation, Bedeutung, G. Meggle (Hg), Frankfurt/M 1979 Bla II M. Black Sprache München 1973 Bla III M. Black The Prevalence of Humbug Ithaca/London 1983 Hor I P. Horwich (Ed.) Theories of Truth Aldershot 1994 |
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Ed. Martin Schulz, access date 2017-09-23