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Ideas for 'fragments/reports', 'A Priori' and 'Notebooks 1914-1916'

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5 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

16908

We can dispense with self-evidence, if language itself prevents logical mistakes [Jeshion on Wittgenstein]

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

8078	Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

6023	Every proposition is either true or false [Chrysippus, by Cicero]

5. Theory of Logic / E. Structures of Logic / 1. Logical Form

18276

A statement's logical form derives entirely from its constituents [Wittgenstein]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

6563	'And' and 'not' are non-referring terms, which do not represent anything [Wittgenstein, by Fogelin]