7 ideas
9987 | An aggregate in which order does not matter I call a 'set' [Bolzano] |
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] |
10856 | A truly infinite quantity does not need to be a variable [Bolzano] |
13345 | Sentences are 'analytical' if every sequence of objects models them [Tarski] |
5996 | Critolaus redefined Aristotle's moral aim as fulfilment instead of happiness [Critolaus, by White,SA] |