Combining Texts

Ideas for 'fragments/reports', '23: Book of Isaiah' and 'Philosophical Investigations'

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5 ideas

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

18743

Wittgenstein says we want the grammar of problems, not their first-order logical structure [Wittgenstein, by Horsten/Pettigrew]

5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names

4139	Naming is a preparation for description [Wittgenstein]

5. Theory of Logic / F. Referring in Logic / 1. Naming / b. Names as descriptive

4946	A name is not determined by a description, but by a cluster or family [Wittgenstein, by Kripke]