5 ideas
8698 | Modal structuralism says mathematics studies possible structures, which may or may not be actualised [Hellman, by Friend] |
9557 | Statements of pure mathematics are elliptical for a sort of modal conditional [Hellman, by Chihara] |
10263 | Modal structuralism can only judge possibility by 'possible' models [Shapiro on Hellman] |
11052 | Psychological logic can't distinguish justification from causes of a belief [Frege] |
22352 | Out of more than a hundred planets, Earth is the only one with the idea of free will [Vonnegut] |