Combining Texts

Ideas for 'fragments/reports', 'Change in View: Principles of Reasoning' and 'works'

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6 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 / F. Referring in Logic / 1. Naming / a. Names

8453	If we had to name objects to make existence claims, we couldn't discuss all the real numbers [Quine]

5. Theory of Logic / G. Quantification / 1. Quantification

10311

No sense can be made of quantification into opaque contexts [Quine, by Hale]

10538

Finite quantification can be eliminated in favour of disjunction and conjunction [Quine, by Dummett]

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

10793

Quine thought substitutional quantification confused use and mention, but then saw its nominalist appeal [Quine, by Marcus (Barcan)]