Combining Texts

All the ideas for 'works', 'Philosophical Grammar' and 'The Runabout Inference Ticket'

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7 ideas

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
17896 We need to know the meaning of 'and', prior to its role in reasoning [Prior,AN, by Belnap]
17898 Prior's 'tonk' is inconsistent, since it allows the non-conservative inference A |- B [Belnap on Prior,AN]
11021 Prior rejected accounts of logical connectives by inference pattern, with 'tonk' his absurd example [Prior,AN, by Read]
13836 Maybe introducing or defining logical connectives by rules of inference leads to absurdity [Prior,AN, by Hacking]
5. Theory of Logic / G. Quantification / 2. Domain of Quantification
17743 De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki]
6. Mathematics / A. Nature of Mathematics / 1. Mathematics
18281 In mathematics everything is algorithm and nothing is meaning [Wittgenstein]
21. Aesthetics / A. Aesthetic Experience / 2. Aesthetic Attitude
6606 Consider: "Imagine this butterfly exactly as it is, but ugly instead of beautiful" [Wittgenstein]