Combining Texts

Ideas for 'Metaphysics', 'Theory of Knowledge (2nd ed 1977)' and 'The Principles of Mathematics'

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6 ideas

18. Thought / E. Abstraction / 3. Abstracta by Ignoring

9792	Mathematicians study quantity and continuity, and remove the perceptible features of things [Aristotle]

9077	Mathematicians suppose inseparable aspects to be separable, and study them in isolation [Aristotle]

18. Thought / E. Abstraction / 7. Abstracta by Equivalence

10583

Abstraction principles identify a common property, which is some third term with the right relation [Russell]

10582

The principle of Abstraction says a symmetrical, transitive relation analyses into an identity [Russell]

10584

A certain type of property occurs if and only if there is an equivalence relation [Russell]

18. Thought / E. Abstraction / 8. Abstractionism Critique

9075	If health happened to be white, the science of health would not study whiteness [Aristotle]