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Ideas for 'fragments/reports', 'Grundlagen der Arithmetik (Foundations)' and 'Metaphysics'

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8 ideas

9. Objects / F. Identity among Objects / 1. Concept of Identity
Two things with the same primary being and essence are one thing [Aristotle]
The idea of a criterion of identity was introduced by Frege [Frege, by Noonan]
Frege's algorithm of identity is the law of putting equals for equals [Frege, by Quine]
9. Objects / F. Identity among Objects / 3. Relative Identity
Geach denies Frege's view, that 'being the same F' splits into being the same and being F [Perry on Frege]
9. Objects / F. Identity among Objects / 4. Type Identity
Things such as two different quadrangles are alike but not wholly the same [Aristotle]
9. Objects / F. Identity among Objects / 5. Self-Identity
You are one with yourself in form and matter [Aristotle]
We can't understand self-identity without a prior grasp of the object [Aristotle]
9. Objects / F. Identity among Objects / 6. Identity between Objects
Identity between objects is not a consequence of identity, but part of what 'identity' means [Frege, by Dummett]