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Ideas for 'Frege's Concept of Numbers as Objects', 'Modes of Extension: comment on Fine' and 'Resurrecting Biological Essentialism'

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3 ideas

18. Thought / E. Abstraction / 7. Abstracta by Equivalence
Any equivalence relation among similar things allows the creation of an abstractum [Simons]
Abstraction is usually seen as producing universals and numbers, but it can do more [Simons]
If we can establish directions from lines and parallelism, we were already committed to directions [Wright,C]