Combining Texts
Ideas for
'works', 'Is Hume's Principle analytic?' and 'Introduction to the Theory of Logic'
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5 ideas
4. Formal Logic / F. Set Theory ST / 1. Set Theory
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Sets can be defined by 'enumeration', or by 'abstraction' (based on a property) [Zalabardo]
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4. Formal Logic / F. Set Theory ST / 2. Mechanics of Set Theory / b. Terminology of ST
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The 'Cartesian Product' of two sets relates them by pairing every element with every element [Zalabardo]
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A 'partial ordering' is reflexive, antisymmetric and transitive [Zalabardo]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets
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Determinacy: an object is either in a set, or it isn't [Zalabardo]
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / l. Axiom of Specification
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Specification: Determinate totals of objects always make a set [Zalabardo]
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