Combining Texts
Ideas for
'The Evolution of Logic', 'The Semantic Conception of Truth' and 'The Therapy of Desire'
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13 ideas
3. Truth / F. Semantic Truth / 1. Tarski's Truth / a. Tarski's truth definition
19196
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Scheme (T) is not a definition of truth [Tarski]
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19180
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It is convenient to attach 'true' to sentences, and hence the language must be specified [Tarski]
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19181
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In the classical concept of truth, 'snow is white' is true if snow is white [Tarski]
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19183
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Each interpreted T-sentence is a partial definition of truth; the whole definition is their conjunction [Tarski]
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19182
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Use 'true' so that all T-sentences can be asserted, and the definition will then be 'adequate' [Tarski]
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19198
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We don't give conditions for asserting 'snow is white'; just that assertion implies 'snow is white' is true [Tarski]
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3. Truth / F. Semantic Truth / 1. Tarski's Truth / b. Satisfaction and truth
19184
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The best truth definition involves other semantic notions, like satisfaction (relating terms and objects) [Tarski]
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19191
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Specify satisfaction for simple sentences, then compounds; true sentences are satisfied by all objects [Tarski]
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13504
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Truth for sentences is satisfaction of formulae; for sentences, either all sequences satisfy it (true) or none do [Hart,WD]
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3. Truth / F. Semantic Truth / 1. Tarski's Truth / c. Meta-language for truth
19188
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We can't use a semantically closed language, or ditch our logic, so a meta-language is needed [Tarski]
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19189
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The metalanguage must contain the object language, logic, and defined semantics [Tarski]
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3. Truth / F. Semantic Truth / 2. Semantic Truth
10824
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If listing equivalences is a reduction of truth, witchcraft is just a list of witch-victim pairs [Field,H on Tarski]
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13503
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A first-order language has an infinity of T-sentences, which cannot add up to a definition of truth [Hart,WD]
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