6 ideas
8138 | Beware lest any man spoil you through philosophy [Paul] |
7791 | The simplest of the logics based on possible worlds is Lewis's S5 [Lewis,CI, by Girle] |
17807 | To study formal systems, look at the whole thing, and not just how it is constructed in steps [Curry] |
17806 | It is untenable that mathematics is general physical truths, because it needs infinity [Curry] |
17808 | Saying mathematics is logic is merely replacing one undefined term by another [Curry] |
11002 | Equating necessity with informal provability is the S4 conception of necessity [Lewis,CI, by Read] |