8 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
8956 | What is a singleton set, if a set is meant to be a collection of objects? [Szabó] |
8953 | Abstract entities don't depend on their concrete entities ...but maybe on the totality of concrete things [Szabó] |
594 | Speusippus suggested underlying principles for every substance, and ended with a huge list [Speussipus, by Aristotle] |
8954 | Geometrical circles cannot identify a circular paint patch, presumably because they lack something [Szabó] |
8955 | Abstractions are imperceptible, non-causal, and non-spatiotemporal (the third explaining the others) [Szabó] |
10246 | The limit of science is isomorphism of theories, with essences a matter of indifference [Weyl] |
2632 | Speusippus said things were governed by some animal force rather than the gods [Speussipus, by Cicero] |