Combining Texts
Ideas for
'The Boundary Stones of Thought', 'The Passions' and 'Defeasibility Theory'
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5 ideas
4. Formal Logic / F. Set Theory ST / 1. Set Theory
18830
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Most set theorists doubt bivalence for the Continuum Hypothesis, but still use classical logic [Rumfitt]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets
18843
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The iterated conception of set requires continual increase in axiom strength [Rumfitt]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / b. Axiom of Extensionality I
18836
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A set may well not consist of its members; the empty set, for example, is a problem [Rumfitt]
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18837
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A set can be determinate, because of its concept, and still have vague membership [Rumfitt]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / g. Axiom of Powers VI
18845
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If the totality of sets is not well-defined, there must be doubt about the Power Set Axiom [Rumfitt]
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