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'works', 'Mental Files in Flux' and 'The Principles of Mathematics'
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3 ideas
8. Modes of Existence / A. Relations / 1. Nature of Relations
21341
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Philosophers of logic and maths insisted that a vocabulary of relations was essential [Russell, by Heil]
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8. Modes of Existence / A. Relations / 4. Formal Relations / a. Types of relation
10586
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'Reflexiveness' holds between a term and itself, and cannot be inferred from symmetry and transitiveness [Russell]
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8. Modes of Existence / A. Relations / 4. Formal Relations / b. Equivalence relation
10585
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Symmetrical and transitive relations are formally like equality [Russell]
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