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'Counterpart theory and Quant. Modal Logic', 'The Concept of Truth for Formalized Languages' and 'My Philosophical Development'
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5 ideas
6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism
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We tried to define all of pure maths using logical premisses and concepts [Russell]
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6. Mathematics / C. Sources of Mathematics / 7. Formalism
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Formalism can't apply numbers to reality, so it is an evasion [Russell]
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Formalists say maths is merely conventional marks on paper, like the arbitrary rules of chess [Russell]
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Tarski's theory of truth shifted the approach away from syntax, to set theory and semantics [Feferman/Feferman on Tarski]
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6. Mathematics / C. Sources of Mathematics / 10. Constructivism / b. Intuitionism
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Intuitionism says propositions are only true or false if there is a method of showing it [Russell]
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