Combining Texts

Ideas for 'fragments/reports', 'The Road to Serfdom' and 'The Essence of Reference'

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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 / F. Referring in Logic / 1. Naming / e. Empty names

10429

It is best to say that a name designates iff there is something for it to designate [Sainsbury]

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / b. Definite descriptions

10425

Definite descriptions may not be referring expressions, since they can fail to refer [Sainsbury]

10438

Definite descriptions are usually rigid in subject, but not in predicate, position [Sainsbury]