Combining Texts
Ideas for
'Philosophical Explanations', 'The Principles of Mathematics' and 'Why Propositions cannot be concrete'
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5 ideas
18. Thought / E. Abstraction / 1. Abstract Thought
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The idea of abstract objects is not ontological; it comes from the epistemological idea of abstraction [Plantinga]
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Theists may see abstract objects as really divine thoughts [Plantinga]
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18. Thought / E. Abstraction / 7. Abstracta by Equivalence
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Abstraction principles identify a common property, which is some third term with the right relation [Russell]
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The principle of Abstraction says a symmetrical, transitive relation analyses into an identity [Russell]
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A certain type of property occurs if and only if there is an equivalence relation [Russell]
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