display all the ideas for this combination of texts
3 ideas
21606 | 'Bivalence' is the meta-linguistic principle that 'A' in the object language is true or false [Williamson] |
21605 | Excluded Middle is 'A or not A' in the object language [Williamson] |
6023 | Every proposition is either true or false [Chrysippus, by Cicero] |