7 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] |
13432 | The essence of a circle is the equality of its radii [Leibniz] |
13345 | Sentences are 'analytical' if every sequence of objects models them [Tarski] |
7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
12696 | Bodies are recreated in motion, and don't exist in intervening instants [Leibniz] |