8 ideas
18812 | Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt] |
13344 | X follows from sentences K iff every model of K also models X [Tarski] |
13343 | A 'model' is a sequence of objects which satisfies a complete set of sentential functions [Tarski] |
13345 | Sentences are 'analytical' if every sequence of objects models them [Tarski] |
13550 | To be always happy is to lack knowledge of one half of nature [Seneca] |
13549 | Nothing bad can happen to a good man [Seneca] |
21994 | The handmill gives feudalism, the steam mill capitalism [Marx] |
13548 | The ocean changes in volume in proportion to the attraction of the moon [Seneca] |