Combining Texts

All the ideas for 'Necessary Existents', 'Improvement of Understanding' and 'A Note on the entscheidungsproblem'

expand these ideas     |    start again     |     specify just one area for these texts

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4 ideas

2. Reason / D. Definition / 2. Aims of Definition

16541

All the intrinsic properties of a thing should be deducible from its definition [Spinoza]

5. Theory of Logic / K. Features of Logics / 7. Decidability

18758

Validity is provable, but invalidity isn't, because the model is infinite [Church, by McGee]

14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence

13073

To understand the properties we must know the essence, as with a circle [Spinoza]

19. Language / D. Propositions / 3. Concrete Propositions

19216

Propositions (such as 'that dog is barking') only exist if their items exist [Williamson]