Combining Texts
Ideas for
'The Problem of the Soul', 'Set Theory and related topics (2nd ed)' and 'What is Cantor's Continuum Problem?'
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3 ideas
4. Formal Logic / F. Set Theory ST / 3. Types of Set / e. Equivalence classes
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8920
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Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets
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8679
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We perceive the objects of set theory, just as we perceive with our senses [Gödel]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / o. Axiom of Constructibility V = L
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9942
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Gödel proved the classical relative consistency of the axiom V = L [Gödel, by Putnam]
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