Combining Texts

All the ideas for 'Frege's Theory of Numbers', 'On the General Idea of Proof Theory' and 'Two letters on mind'

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

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5 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13827

Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

13826

Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz]

6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure

17447

Parsons says counting is tagging as first, second, third..., and converting the last to a cardinal [Parsons,C, by Heck]

8. Modes of Existence / C. Powers and Dispositions / 2. Powers as Basic

16635

Incorporeal substances are powers or forces [Descartes, by Pasnau]

26. Natural Theory / A. Speculations on Nature / 7. Later Matter Theories / c. Matter as extension

16684

Impenetrability only belongs to the essence of extension [Descartes]