display all the ideas for this combination of texts
3 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] |
8078 | Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin] |