6 ideas
7791 | The simplest of the logics based on possible worlds is Lewis's S5 [Lewis,CI, by Girle] |
15453 | The main rivals to universals are resemblance or natural-class nominalism, or sparse trope theory [Lewis] |
15452 | We could not uphold a truthmaker for 'Fa' without structures [Lewis] |
11002 | Equating necessity with informal provability is the S4 conception of necessity [Lewis,CI, by Read] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |