Combining Texts

All the ideas for 'Set Theory and related topics (2nd ed)', 'Letter to Pythocles' and 'A Plea for Substitutional Quantification'

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7 ideas

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic

9470	Modal logic is not an extensional language [Parsons,C]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / e. Equivalence classes

8920	Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz]

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

9469	Substitutional existential quantifier may explain the existence of linguistic entities [Parsons,C]

9468	On the substitutional interpretation, '(∃x) Fx' is true iff a closed term 't' makes Ft true [Parsons,C]

14. Science / D. Explanation / 3. Best Explanation / c. Against best explanation

21386

We should accept as explanations all the plausible ways in which something could come about [Epicurus]

27. Natural Reality / E. Cosmology / 1. Cosmology

14051

A cosmos is a collection of stars and an earth, with some sort of boundary, movement and shape [Epicurus]

28. God / C. Attitudes to God / 3. Deism

1828	God does not intervene in heavenly movements, but is beyond all action and perfectly happy [Epicurus]