Combining Texts

Ideas for 'fragments/reports', 'Of Human Freedom' and 'works'

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4 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 / C. Ontology of Logic / 3. If-Thenism

21493

Pure mathematics deals only with hypotheses, of which the reality does not matter [Peirce]

5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence

19102

Bivalence is a regulative assumption of enquiry - not a law of logic [Peirce, by Misak]

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

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