Combining Texts
Ideas for
'Function and Concept', 'Identity' and 'Reply to 'Rorarius' 2nd ed'
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9 ideas
9. Objects / A. Existence of Objects / 3. Objects in Thought
8489
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The concept 'object' is too simple for analysis; unlike a function, it is an expression with no empty place [Frege]
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9. Objects / E. Objects over Time / 4. Four-Dimensionalism
16024
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I could have died at five, but the summation of my adult stages could not [Noonan]
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9. Objects / E. Objects over Time / 5. Temporal Parts
16023
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Stage theorists accept four-dimensionalism, but call each stage a whole object [Noonan]
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9. Objects / F. Identity among Objects / 2. Defining Identity
16015
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Problems about identity can't even be formulated without the concept of identity [Noonan]
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16017
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Identity is usually defined as the equivalence relation satisfying Leibniz's Law [Noonan]
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16016
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Identity definitions (such as self-identity, or the smallest equivalence relation) are usually circular [Noonan]
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16020
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Identity can only be characterised in a second-order language [Noonan]
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9. Objects / F. Identity among Objects / 8. Leibniz's Law
16018
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Indiscernibility is basic to our understanding of identity and distinctness [Noonan]
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16019
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Leibniz's Law must be kept separate from the substitutivity principle [Noonan]
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