Combining Texts

Ideas for 'fragments/reports', 'The Intentional Fallacy' and 'The Semantic Conception of Truth'

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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 / D. Assumptions for Logic / 2. Excluded Middle

19192

The truth definition proves semantic contradiction and excluded middle laws (not the logic laws) [Tarski]

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

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox

19187

The Liar makes us assert a false sentence, so it must be taken seriously [Tarski]